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Agilent TechnologiesE1468A/E1469ARelay Matrix Switch ModulesUser’s Manual

*E1468-90005*Manual Part Number: E1468-90005

Printed in U.S.A. E1200

ContentsE1468A/E1469A Relay Matrix Switch User’s Manual

AGILENT TECHNOLOGIES WARRANTY STATEMENT ............................................ 7Safety Symbols ............................................................................................................ 8WARNINGS ................................................................................................................. 8

Chapter 1Getting Started ............................................................................................................ 11

Using This Chapter .................................................................................................... 11Relay Matrix Switches Description............................................................................. 11

E1468A Switch Description ................................................................................ 11E1469A Switch Description ................................................................................ 11E1468A/E1469A Connector Pin-Outs ................................................................ 11

Configuring the Relay Matrix Switches ...................................................................... 15Warnings and Cautions ......................................................................................15Setting the Logical Address Switch .................................................................... 16Setting the Status Register Switch .....................................................................16Setting the Interrupt Priority ................................................................................ 17Installing Relay Matrix Switches in a Mainframe ................................................18

Configuring the Terminal Modules.............................................................................. 20Wiring the Terminal Modules .............................................................................. 20Creating Larger Matrixes .................................................................................... 23Attaching a Terminal Module to the Relay Switch Module .................................. 27

Programming the Relay Matrix Switches ...................................................................28Using SCPI Commands ......................................................................................28Addressing the Modules .................................................................................... 28Initial Operation .................................................................................................. 29

Chapter 2Using the Relay Matrix Switches ............................................................................... 31

Using This Chapter ....................................................................................................31Relay Matrix Switch Commands/States .....................................................................31

Relay Matrix Switch Commands ......................................................................... 31Relay Matrix Switch Query Commands ..............................................................32Power-on and Reset Conditions ......................................................................... 32

Relay Matrix Switch Functions................................................................................... 33Checking Module Identification ........................................................................... 33Switching Channels ............................................................................................ 33Recalling and Saving States ............................................................................... 34Detecting Error Conditions .................................................................................35Synchronizing Relay Matrix Switches ................................................................ 36

Chapter 3Relay Matrix Switch Command Reference ............................................................... 37

About This Chapter ................................................................................................... 37Command Types ....................................................................................................... 37

Common Command Format ............................................................................... 37SCPI Command Format ..................................................................................... 37Linking Commands .............................................................................................39

3

SCPI Commands Reference ..................................................................................... 39ABORt ........................................................................................................................ 40ARM ........................................................................................................................... 41

ARM:COUNt ....................................................................................................... 41ARM:COUNt? ..................................................................................................... 42

INITiate.......................................................................................................................43INITiate:CONTinuous ......................................................................................... 43INITiate:CONTinuous? ....................................................................................... 44INITiate[:IMMediate] ........................................................................................... 44

OUTPut ...................................................................................................................... 45OUTPut:ECLTrg[:STATe] .................................................................................... 45OUTPut:ECLTrg[:STATe]? .................................................................................. 46OUTPut[:EXTernal][:STATe] ................................................................................ 46OUTPut[:EXTernal][:STATe]? .............................................................................. 47OUTPut:TTLTrg[:STATe] ..................................................................................... 48OUTPut:TTLTrg[:STATe]? ................................................................................... 49

[ROUTe:] .................................................................................................................... 50[ROUTe:]CLOSe ................................................................................................. 50[ROUTe:]CLOSe? ............................................................................................... 51[ROUTe:]OPEN ................................................................................................... 52[ROUTe:]OPEN? ................................................................................................. 53[ROUTe:]SCAN ................................................................................................... 53

STATus.......................................................................................................................55STATus:OPERation:CONDition? ........................................................................ 56STATus:OPERation:ENABle ............................................................................... 57STATus:OPERation:ENABle? ............................................................................. 57STATus:OPERation[:EVENt]? ............................................................................ 58STATus:PRESet ................................................................................................. 58

SYSTem ..................................................................................................................... 59SYSTem:CDEScription? ..................................................................................... 59SYSTem:CPON .................................................................................................. 59SYSTem:CTYPe? ............................................................................................... 60SYSTem:ERRor? ................................................................................................ 60

TRIGger ..................................................................................................................... 62TRIGger[:IMMediate] .......................................................................................... 62TRIGger:SOURce ............................................................................................... 63TRIGger:SOURce? .............................................................................................64

IEEE 488.2 Common Commands Quick Reference ................................................. 65SCPI Commands Quick Reference ........................................................................... 66

Appendix ARelay Matrix Switch Specifications ........................................................................... 67

Appendix BRegister-Based Programming ................................................................................... 69

About This Appendix .................................................................................................. 69Register Addressing................................................................................................... 69

Addressing Overview .......................................................................................... 69The Base Address .............................................................................................. 70Register Definitions ............................................................................................ 72

4

Reading the Registers ............................................................................................... 72Manufacturer Identification Register ...................................................................72Device Identification Register ............................................................................. 73Status/Control Register ....................................................................................... 73Relay Control Registers ......................................................................................73

Writing to the Registers.............................................................................................. 73Status/Control Register ....................................................................................... 73Relay Control Registers ......................................................................................74

Appendix CRelay Matrix Switch Error Messages ........................................................................ 77

Appendix DRelay Life ..................................................................................................................... 79

Replacement Strategy................................................................................................ 79Relay Life Factors ...................................................................................................... 79End-of-Life Determination .......................................................................................... 79

Index ............................................................................................................................... 81

5

Notes:

6

AGILENT TECHNOLOGIES WARRANTY STATEMENT

AGILENT PRODUCT: E1468A/E1469A Relay Matrix Switch Modules DURATION OF WARRANTY: 3 years

1. Agilent Technologies warrants Agilent hardware, accessories and supplies against defects in materials and workmanship for the periodspecified above. If Agilent receives notice of such defects during the warranty period, Agilent will, at its option, either repair or replaceproducts which prove to be defective. Replacement products may be either new or like-new.

2. Agilent warrants that Agilent software will not fail to execute its programming instructions, for the period specified above, due todefects in material and workmanship when properly installed and used. If Agilent receives notice of such defects during the warrantyperiod, Agilent will replace software media which does not execute its programming instructions due to such defects.

3. Agilent does not warrant that the operation of Agilent products will be interrupted or error free. If Agilent is unable, within a reasonabletime, to repair or replace any product to a condition as warranted, customer will be entitled to a refund of the purchase price upon promptreturn of the product.

4. Agilent products may contain remanufactured parts equivalent to new in performance or may have been subject to incidental use.

5. The warranty period begins on the date of delivery or on the date of installation if installed by Agilent. If customer schedules or delaysAgilent installation more than 30 days after delivery, warranty begins on the 31st day from delivery.

6. Warranty does not apply to defects resulting from (a) improper or inadequate maintenance or calibration, (b) software, interfacing, partsor supplies not supplied by Agilent, (c) unauthorized modification or misuse, (d) operation outside of the published environmentalspecifications for the product, or (e) improper site preparation or maintenance.

7. TO THE EXTENT ALLOWED BY LOCAL LAW, THE ABOVE WARRANTIES ARE EXCLUSIVE AND NO OTHERWARRANTY OR CONDITION, WHETHER WRITTEN OR ORAL, IS EXPRESSED OR IMPLIED AND AGILENTSPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OR CONDITIONS OF MERCHANTABILITY, SATISFACTORYQUALITY, AND FITNESS FOR A PARTICULAR PURPOSE.

8. Agilent will be liable for damage to tangible property per incident up to the greater of $300,000 or the actual amount paid for the productthat is the subject of the claim, and for damages for bodily injury or death, to the extent that all such damages are determined by a courtof competent jurisdiction to have been directly caused by a defective Agilent product.

9. TO THE EXTENT ALLOWED BY LOCAL LAW, THE REMEDIES IN THIS WARRANTY STATEMENT ARE CUSTOMER’SSOLE AND EXLUSIVE REMEDIES. EXCEPT AS INDICATED ABOVE, IN NO EVENT WILL AGILENT OR ITS SUPPLIERS BELIABLE FOR LOSS OF DATA OR FOR DIRECT, SPECIAL, INCIDENTAL, CONSEQUENTIAL (INCLUDING LOST PROFIT ORDATA), OR OTHER DAMAGE, WHETHER BASED IN CONTRACT, TORT, OR OTHERWISE.

FOR CONSUMER TRANSACTIONS IN AUSTRALIA AND NEW ZEALAND: THE WARRANTY TERMS CONTAINED IN THISSTATEMENT, EXCEPT TO THE EXTENT LAWFULLY PERMITTED, DO NOT EXCLUDE, RESTRICT OR MODIFY AND AREIN ADDITION TO THE MANDATORY STATUTORY RIGHTS APPLICABLE TO THE SALE OF THIS PRODUCT TO YOU.

U.S. Government Restricted Rights

The Software and Documentation have been developed entirely at private expense. They are delivered and licensed as "commercialcomputer software" as defined in DFARS 252.227- 7013 (Oct 1988), DFARS 252.211-7015 (May 1991) or DFARS 252.227-7014 (Jun1995), as a "commercial item" as defined in FAR 2.101(a), or as "Restricted computer software" as defined in FAR 52.227-19 (Jun1987)(or any equivalent agency regulation or contract clause), whichever is applicable. You have only those rights provided for suchSoftware and Documentation by the applicable FAR or DFARS clause or the Agilent standard software agreement for the productinvolved.

E1468A/E1469A Relay Matrix Switch Modules User’s ManualEdition 5

Copyright © 1990, 1993-1994, 1996, 2000 Agilent Technologies, Inc. All rights reserved.

7

Safety SymbolsInstruction manual symbol affixed toproduct. Indicates that the user must refer tothe manual for specific WARNING orCAUTION information to avoid personalinjury or damage to the product.

Alternating current (AC)Instruction manual symbol affixed toproduct. Indicates that the user must refer tothe manual for specific WARNING orCAUTION information to avoid personalinjury or damage to the product.

Indicates the field wiring terminal that mustbe connected to earth ground beforeoperating the equipment — protects againstelectrical shock in case of fault.

Direct current (DC).

Warning. Risk of electrical shock.

orFrame or chassis ground terminal—typicallyconnects to the equipment's metal frame.

WARNINGCalls attention to a procedure, practice, orcondition that could cause bodily injury ordeath.

CAUTIONCalls attention to a procedure, practice, orcondition that could possibly cause damage toequipment or permanent loss of data.

WARNINGS

The following general safety precautions must be observed during all phases of operation, service, and repair of this product. Failure tocomply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design, manufacture, andintended use of the product. Agilent Technologies assumes no liability for the customer's failure to comply with these requirements.

Ground the equipment: For Safety Class 1 equipment (equipment having a protective earth terminal), an uninterruptible safety earthground must be provided from the mains power source to the product input wiring terminals or supplied power cable.

DO NOT operate the product in an explosive atmosphere or in the presence of flammable gases or fumes.

For continued protection against fire, replace the line fuse(s) only with fuse(s) of the same voltage and current rating and type. DO NOTuse repaired fuses or short-circuited fuse holders.

Keep away from live circuits: Operating personnel must not remove equipment covers or shields. Procedures involving the removal ofcovers or shields are for use by service-trained personnel only. Under certain conditions, dangerous voltages may exist even with theequipment switched off. To avoid dangerous electrical shock, DO NOT perform procedures involving cover or shield removal unless youare qualified to do so.

DO NOT operate damaged equipment: Whenever it is possible that the safety protection features built into this product have beenimpaired, either through physical damage, excessive moisture, or any other reason, REMOVE POWER and do not use the product untilsafe operation can be verified by service-trained personnel. If necessary, return the product to Agilent for service and repair to ensure thatsafety features are maintained.

DO NOT service or adjust alone: Do not attempt internal service or adjustment unless another person, capable of rendering first aid andresuscitation, is present.

DO NOT substitute parts or modify equipment: Because of the danger of introducing additional hazards, do not install substitute partsor perform any unauthorized modification to the product. Return the product to Agilent for service and repair to ensure that safety featuresare maintained.

Documentation History

All Editions and Updates of this manual and their creation date are listed below. The first Edition of the manual is Edition 1. The Editionnumber increments by 1 whenever the manual is revised. Updates, which are issued between Editions, contain replacement pages tocorrect or add additional information to the current Edition of the manual. Whenever a new Edition is created, it will contain all of theUpdate information for the previous Edition. Each new Edition or Update also includes a revised copy of this documentation history page.

Edition 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . November, 1990Edition 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . April, 1993Edition 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . November, 1994Edition 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . February, 1996Edition 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . December, 2000

8

Manufacturer’s Name: Agilent Technologies, Inc.Manufacturer’s Address: Measurement Products Unit

815 14th Street S.W.Loveland, CO 80537 USA

Declares, that the product

Product Name: Relay Matrix Switch ModulesModel Number: E1468A/E1469AProduct Options: This declaration includes all options of the above product(s).

Conforms with the following European Directives:The product herewith complies with the requirements of the Low Voltage Directive 73/23/EEC and the EMC Directive 89/336/EECand carries the CE Marking accordingly.

Conforms with the following product standards:

EMC Standard LimitIEC 61326-1:1997 + A1:1998 / EN 61326-1:1997 + A1:1998

CISPR 11:1997 + A1:1997 / EN 55011-1991 Group 1, Class A [1]

IEC 61000-4-2:1995+A1998 / EN 61000-4-2:1995 4 kV CD, 8 kV ADIEC 61000-4-3:1995 / EN 61000-4-3:1995 3 V/m, 80-1000 MHzIEC 61000-4-4:1995 / EN 61000-4-4:1995 0.5 kV signal lines, 1 kV power linesIEC 61000-4-5:1995 / EN 61000-4-5:1995 0.5 kV line-line, 1 kV line-groundIEC 61000-4-6:1996 / EN 61000-4-6:1996 3 V, 0.15-80 MHzIEC 61000-4-11:1994 / EN 61000-4-11:1994 1 cycle, 100%

Canada: ICES-001:1998Australia/New Zealand: AS/NZS 2064.1

Safety IEC 61010-1:1990+A1:1992+A2:1995 / EN 61010-1:1993+A2:1995Canada: CSA C22.2 No. 1010.1:1992UL 3111-1

Supplemental Information:

[1] The product was tested in a typical configuration with Agilent Technologies test systems.

For further information, please contact your local Agilent Technologies sales office, agent or distributor.Authorized EU-representative: Agilent Technologies Deutschland GmbH, Herrenberger Straβe 130, D 71034 Böblingen, Germany

Revision: A.03 Issue Date: 09/05/00

September 5, 2000

Date Name

Quality Manager

Title

DECLARATION OF CONFORMITYAccording to ISO/IEC Guide 22 and CEN/CENELEC EN 45014

9

Notes:

10

Chapter 1

Getting Started

Using This ChapterThis chapter gives guidelines to get started using the E1468A and E1469ARelay Matrix Switch modules (Relay Matrix Switches), including:

• Relay Matrix Switches Description . . . . . . . . . . . . . . . . . . . . . . 11• Configuring the Relay Matrix Switches. . . . . . . . . . . . . . . . . . .15• Configuring the Terminal Modules . . . . . . . . . . . . . . . . . . . . . .20• Programming the Relay Matrix Switches . . . . . . . . . . . . . . . . .28

Relay Matrix Switches DescriptionThe E1468A and E1469A Relay Matrix Switch modules are VXIbus C-Sizeregister-based modules and operate with an E1406 Command Module.Each Relay Matrix Switch consists of a component module with 64 two-wirerelays and a terminal module for connecting user inputs. The componentmodule (E1468-66202) is the same for the E1468A and E1469A. Theterminal module for the E1468A (E1468-90011) and the terminal modulefor the E1469A (E1469-80011) are different for the two Relay Matrix Switchmodules.

E1468A SwitchDescription

The E1468A Relay Matrix Switch module provides an 8 x 8 two-wirecrosspoint matrix. Multiple modules can be wired together creating 8 x 16(two modules), 16 x 16 (four modules), 8 x 24 (three modules), or largermatrices. Figure 1-1 shows a simplified schematic of the E1468Acomponent module and terminal module.

E1469A SwitchDescription

The E1469A Relay Matrix Switch module provides a 4 x 16 two-wirecrosspoint matrix. Multiple modules can be wired together creating 4 x 32(two modules), 8 x 16 (two modules), 4 x 48 (three modules), or largermatrices. Figure 1-2 shows a simplified schematic of the E1469Acomponent module and terminal module.

E1468A/E1469AConnector Pin-Outs

Each Relay Matrix Switch module consists of a component module and aterminal module. Figure 1-3 illustrates the front panel of an E1468A/E1469Acomponent module and the connector pin-out. The terminal module makesthe row and column connection to form the matrix configuration (see Figures1-1 and 1-2).

Getting Started 11Chapter 1

Figure 1-1. E1468A Simplified Diagram

COMPONENT MODULEE1468A

TERMINAL MODULEE1468A

Matrix 8 x 8

(E1468-66202) (E1468-80011)

12 Getting Started Chapter 1

Figure 1-2. E1469A Simplified Schematic

E1469ACOMPONENT MODULE TERMINAL MODULE

E1469A

Matrix 4 x 16

(E1468-66202) (E1469-80011)


Figure 1-3. E1468A/E1469A Connector Pin-Out


Configuring the Relay Matrix SwitchesThis section gives guidelines to configure the Relay Matrix Switch modules,including:

• Warnings and Cautions• Setting the Logical Address Switch• Setting the Status Register Switch• Setting the Interrupt Priority• Installing Relay Matrix Switches in a Mainframe

Warnings andCautions

WARNING SHOCK HAZARD. Only service-trained personnel who areaware of the hazards involved should install, remove, orconfigure the Relay Matrix Switch modules. Before removingany installed module, disconnect AC power from the VXImainframe and from any devices connected to the RelayMatrix Wwitch modules.

WARNING CHANNEL WIRING INSULATION. All channels that have acommon connection must be insulated so that the user isprotected from electrical shock in the event that two or morechannels are connected together.

CAUTION Maximum Inputs. The maximum voltage that can be applied to any terminal is 220Vdc/250 Vrms. The maximum current that can be applied to any terminal is 1A at 30Vdc/Vrms, or 0.3A at 220 Vdc/250 Vrms. The maximum power that can be appliedto any terminal is 40 VA.

CAUTION Static Electricity. Static electricity is a major cause of component failure.To prevent damage to the electrical components in a Relay Matrix Switch module,observe anti-static techniques when removing or installing the module or whenworking on the module.


Setting the LogicalAddress Switch

The logical address switch (LADDR) factory setting is 112. Valid addressesare from 1 to 255. See Figure 1-4 for switch information. The address switchvalue must be a multiple of 8 if the module is the first module in a "switchbox"used with a VXIbus command module using SCPI commands.

Setting the StatusRegister Switch

Four bits of the status register switch (bits 10-13) define whether the relaymatrix switch module is an E1468A or E1469A. These bits are setautomatically when the terminal module is installed.

To ensure proper operation, even without the terminal module, set thestatus register switch as shown in Figure 1-5. However, if the status registerswitch is set for the E1468A, but the terminal module is an E1469A (orvice-versa), the interface will not be able to correctly identify and an errorwill occur.

Figure 1-4. Setting the Logical Address Switch

OPEN = Switch Set To 0 (OFF)

CLOSED = Switch Set To 1 (ON)

1286432168421

Logical AddressSwitch Location

1=CLOSED

0=OPEN

Logical Address = 112

16+32+64=112


Setting the InterruptPriority

The E1468A/E1469A Relay Matrix Switch modules generate an interruptafter a channel has been closed. These interrupts are sent to, andacknowledgments are received from, the command module (such as anE1406) through the VXIbus backplane interrupt lines.

For most applications where the relay matrix switch module is installedin a C-Size VXI mainframe, the interrupt priority jumper does not have to bemoved. This is because the VXIbus interrupt lines have the same priorityand interrupt priority is established by installing the modules in slotsnumerically closest to the E1406 Command Module. Thus, slot 1 has ahigher priority than slot 2, slot 2 has a higher priority than slot 3, etc..

See Figure 1-6 to change the interrupt priority. You can select eight differentinterrupt priority levels. Level 1 is the lowest priority and level 7 is the highestpriority. Level X disables the interrupt.

The module's factory setting is level 1. To change the priority level, removethe four-pin jumper from the old priority location and reinstall the jumper inthe new priority location. If the four-pin jumper is not used, the two jumperlocations must have the same interrupt priority level selected.

NOTE The interrupt priority jumper must be installed in position 1 when using theE1406 Command Module. Level X interrupt priority should not be usedunder normal operating conditions. Changing the interrupt priority leveljumper is not recommended.

Figure 1-5. Setting the Status Register Switch

13 10

E1469AE1468A0

11010

10

Example showsswitch setto "E1468A"

Switch LocationStatus Register


Installing RelayMatrix Switches in a

Mainframe

The E1468A/E1469A modules may be installed in any slot (except slot 0)in a C-Size VXI mainframe. See Figure 1-7 to install a module in amainframe.

Figure 1-6. Interrupt Priority Selection

XXIRQ 367 45 2 1

IRQ

Using 2-PinJumper

4

JumperUsing 4-Pin

67 5 23 1 PriorityLocation

Interrupt


Figure 1-7. Installing Relay Matrix Switches in a Mainframe

Slide the E1468/69A into any slot(except slot 0) until the backplaneconnectors touch.

To remove the module from the mainframe,

Tighten the top and bottom screwsto secure the module to

reverse the procedure.

the mainframe.

LeversExtraction

Set the extraction levers out.

4

1

2

into the mainframe bySeat the E1468/69A

pushing in the extractionlevers.

3

NOTE: The extraction levers will notseat the backplane connectors on olderVXIbus mainframes. You must manuallyseat the connectors by pushing in themodule until the module's front panel isflush with the front of the mainframe. Theextraction levers may be used to guide orremove the module.


Configuring the Terminal ModulesThis section gives guidelines to configure the E1468A and E1469A terminalmodules, including:

• Wiring the Terminal Module• Creating Larger Matrixes• Attaching a Terminal Module to the Relay Switch Module

Wiring the TerminalModules

Guidelines to wire the E1468A and E1469A terminal modules follow.

E1468A Terminal ModuleConnectors

Figure 1-8 shows the E1468A terminal module connectors and associatedrow/column designators. Shielding jumpers JM1 - JM10 are shown. See"Creating Larger Matrices" for information on using the expansionconnectors J1 - J4 and for shield wiring details.

NOTE Jumpers JM1 - JM10 on the E1468A terminal module connect row/columnshields to earth ground through the VXIbus backplane. You may want toremove one or more of these jumpers to reduce common mode noise.

Figure 1-8. E1468A 8 x 8 Matrix Switch Terminal Module

ColumnConnector Connector

Row

Column ExpansionConnector

*

Column InputConnector

Row InputConnector

Row ExpansionConnector

ShieldConnectorTB5* * *

In parallel with the screw terminals.*


E1469A Terminal ModuleConnectors

Figure 1-9 shows the E1469A terminal module connectors and associatedrow/column designators. Shielding jumpers JM1 - JM12 are shown. See"Creating Larger Matrices" for information on using the expansionconnectors J1 - J5 and for shield wiring details.

NOTE Jumpers JM1 - JM12 on the E1469A terminal module connect row/columnshields to earth ground through the VXIbus backplane. You may want toremove one or more of these jumpers to reduce common mode noise.

Available Cables To assist you in wiring Relay Matrix Switch terminal modules into your testsystem, this table shows a list of cables that are available from Agilent.

Figure 1-9. E1469A 4 x 16 Matrix Switch Terminal Block

ConnectorRow

Column ExpansionConnectors

*

Column InputConnectors

Row InputConnector

Row ExpansionConnector

ShieldConnectorTB5* * *

In parallel with the screw terminals.*

ConnectorsColumn

Description FinishedLength

End "A" End "B" Part Number

Module expansion connectorwith quick disconnect(twisted pair)

~30 cm 4 x 2 connector forexpansion connectors onterminal modules

4 x 2 connector forexpansion connectors onterminal modules

E1468-80002

50 Ω Coax 2.0 m 2-pin TLA* BNC (molded over) E1065-61620

Dual banana instrument 2.0 m 3-pin TLA* Dual banana E1066-61620

SMB instrument 2.0 m 2-pin TLA* SMB (molded over) E1068-61620

*TLA is a family of connector/cable assemblies with good transmission line design that are made by an Agilent supplier.The 2-pin and 3-pin TLA connectors are designed to fit on one channel of the terminal module expansion connectors.


Terminal Module WiringGuidelines

User wiring to the Relay Matrix Switch modules is to the High (H) and Low(L) connections on terminal module. Figure 1-10 gives guidelines to wire theterminal modules. Maximum terminal wire size is No. 16 AWG. Wire endsshould be stripped 6mm (0.25 in.) and tinned. When wiring all channels,use a smaller gauge wire (No. 20 - 22 AWG). The expansion connectorsallow you to create larger matrices. See "Creating Larger Matrices".

Figure 1-10. Wiring the Terminal Module

Tighten screw.Insert wire into terminal.

Screw-Type

Make connections.

Remove clear cover.

3

1

VW1 Flammability

Use wire

Rating

size 16-26AWG

0.2"5mm

Tab

and release.B. Press tab forward

A. Release screws.

Route wiring.4

secure wires.Tighten wraps to

wire exit panels.Remove 1 of the 3

Remove and retain wiring exit panel.2

Cut requiredholes in panels

for wire exit

Replace Wiring Exit Panel5

Keep wiring exit panelhole as small aspossible

B. Press down andtighten screws

Replace Clear cover

A. Hook in the top cover tabsonto the fixture

6


Creating LargerMatrixes

You can use the expansion connectors on the terminal module tointerconnect modules to create larger matrixes. Use part numberE1468-80002 Daisy-Chain Cable (a 4-pair High and Low cable assembly)for expansion between modules. This cable provides a quick-disconnectallowing easy removal of modules.

Shield Wiring Details Figure 1-11 shows shield wiring details for the E1468A and E1469A terminalmodules.

Figure 1-11. E1468A and E1469A Terminal Module Shield Wiring

EXPANSION CONNECTOR J4ROWS 4-7

JM8

JM7

ROWS 0-3EXPANSION CONNECTOR J4

JM6


JM5


JM4

COLUMN 4-7EXPANSION CONNECTOR J2

JM3


JM2


JM1


JM9

JM10To earth ground via VXIbus backplane.

E1468A Shield WiringTB5 TB5

E1469A Shield Wiring

To earth ground via VXIbus backplane.JM12

JM11

EXPANSION CONNECTOR J1COLUMN 0-3

JM1


JM2


JM3


JM4

EXPANSION CONNECTOR J3COLUMNS 0-3

JM5


JM6


JM7

JM8

COLUMNS 12-15EXPANSION CONNECTOR J4

EXPANSION CONNECTOR J5ROWS 0-3

JM10

JM9


ShieldConnector Connector

Shield

Shielding Shielding


8 x 24 Matrix Figure 1-12 shows how to connect three E1468A Relay Matrix SwitchModules to create an 8-row by 24-column matrix. This configuration requiresfour E1468-80002 Daisy-Chain Cables.

Figure 1-12. 8-Row x 24-Column Matrix Using E1468A Terminal Module

COLUMNS 16-23COLUMNS 8-15COLUMNS 0-7

ROWS 0-7

To AnotherModule

ExpansionCable

LowHigh

Channel Expansion Connector

Expansion cable plugs into top two rows ofpins on channel expansion connector locatedon the terminal module.


16 x 16 Matrix Figure 1-13 shows how to connect four E1468A Relay Matrix SwitchModules to create a 16-row by 16-column matrix. This configuration requireseight E1468-80002 Daisy-Chain Cables.

Figure 1-13. 16-Row x 16-Column Matrix Using E1468A Terminal Module

COLUMNS 0-7

ROWS 0-7

COLUMNS 8-15

ROWS 8-15

To AnotherModule

ExpansionCable

LowHigh


Expansion cable plugs into top two rows ofpins on channel expansion connector locatedon the terminal module.


4 x 48 Matrix Figure 1-14 shows how to connect three E1469A Relay Matrix SwitchModules to create a 4-row by 48-column matrix. This configuration requirestwo E1468-80002 Daisy-Chain Cables.

Figure 1-14. 4-Row x 48-Column Matrix Using E1469A Terminal Block

pins on channel expansion connector locatedExpansion cable plugs into top two rows of

COLUMNS 40-47COLUMNS 8-15 COLUMNS 24-31

ModuleTo Another

ROWS 0-3

on the terminal module.CableExpansion


HighLow

COLUMNS 0-7 COLUMNS 16-23 COLUMNS 32-39


Attaching aTerminal Module to

the Relay SwitchModule

Figure 1-15 gives guidelines to attach a terminal module to a componentmodule.

Figure 1-15. Attaching a Terminal Module to the Relay Matrix Switch Module

Extraction Lever

levers and push both levers out simultaneouslyuse a small screwdriver to release the two extractionTo remove the terminal module from the E1468/69A,

LeversExtraction

Align the terminal module connectorsto the E1468/69A connectors.

Extend the extraction levers on the

to free it from the E1468A/69A connectors.

onto the E1468/69A.

Push in the extraction leversto lock the terminal module

E1468/69A.

4

the terminal module to theApply gentle pressure to attach

to release the twoUse small screwdriver

terminal module.

3

1

2

extraction levers

Extraction Lever

E1468/69A


Programming the Relay Matrix SwitchesThis section gives guidelines to program the Relay Matrix Switches,including:

• Using SCPI Commands• Addressing the Modules• Initial Operation

Using SCPICommands

VXIbus plug-in modules installed in a C-Size VXI mainframe are treated asindependent instruments having a unique secondary GPIB address. Eachinstrument is also assigned a dedicated error queue, input and outputbuffers, status registers, and, if applicable, dedicated mainframe memoryspace for readings or data. An instrument may be composed of a singleplug-in module (such as a counter) or multiple plug-in modules (for aswitchbox or scanning voltmeter instrument).

To program the Relay Matrix Switch module using Standard Commands forProgrammable Instruments (SCPI), you must select the computer language,interface address, and SCPI commands to be used. Guidelines to selectSCPI commands for the relay matrix switch module follow.

NOTE This discussion applies only to SCPI programming. See Appendix B forinformation on Relay Matrix Switch registers.

Addressing theModules

To address specific channels (relays) within a relay matrix, you must specifythe SCPI command and the Relay Matrix Switch channel address. UseCLOSe <channel_list> to close specified relay(s), OPEN <channel_list> toopen specified relay(s), and SCAN <channel_list> to close the set of relaysspecified.

Module Card Numbers The matrix card (module) number depends on the switchbox configuration(single-module or multiple-module) set for the matrices. (Leading zeroescan be ignored for the card number.) For a single-module switchbox, thecard number is always 01.

For a multiple-module switchbox, the card numbers are 01, 02,...nn.The module with the lowest logical address is card number 01, the modulewith the next-lowest logical address is card number 02, etc..


E1468A Relay MatrixSwitch Channel

Addresses

For the E1468A Relay Matrix Switch module, the channel address(channel_list) has the form (@ssrc) where ss = card number (01-99),r = row number, and c = column number. E1468A Relay Matrix Switchmodule channel numbers are r = 0 to 7 (one digit) and c = 0 to 7 (one digit).

You can address single channels (@ssrc); multiple channels(@ssrc,ssrc,...); sequential channels (@ssrc:ssrc); groups of sequentialchannels; @ssrc:ssrc,ssrc:ssrc); or any combination. For example, CLOS (@124) closes row 2, column 4 of card 01 of an E1468A Relay Matrix Switchmodule.

Only valid channels can be accessed in a channel list or channel range.Also, the channel list or channel range must be from a lower channel numberto a higher channel number. For example, CLOS (@100:233) is acceptable,but CLOS (@233:100) generates an error.

E1469A Relay MatrixSwitch Channel

Addresses

For the E1469A Relay Matrix Switch module, the channel address(channel_list) has the form (@ssrrcc) where ss = card number (01-99),rr = row number, and cc = column number. E1469A 4 x 16 Relay MatrixSwitch module channel numbers are rr = 00 to 03 (two digits) and cc =00 to 15 (two digits).

You can address single channels (@ssrrcc); multiple channels@ssrrcc,ssrrcc,...); sequential channels (@ssrrcc:ssrrcc); groups ofsequential channels (@ssrrcc:ssrrcc,ssrrcc:ssrrcc); or any combination.For example, CLOS (@10214) closes row 02, column 14 of card 01 of anE1469A Relay Matrix Switch module.

Only valid channels can be accessed in a channel list or channel range.Also, the channel list or channel range must be from a lower channel numberto a higher channel number. For example, CLOS (@10000:20303) isacceptable, but CLOS (@20303:10000) generates an error.

Initial Operation An example program follows that uses BASIC and SCPI language to helpget you started using the Relay Matrix Switch modules. The exampleassumes a GPIB interface. The program closes row 03, column 12 of anE1469A 4 x 16 Relay Matrix Switch module at logical address 112(secondary address = 112/8 = 14) and queries the result. The result isreturned to the controller and displayed (1 = relay closed, 0 = relay open).

10 OUTPUT 70914; "*RST" !Reset the module. Set!all relays to open.

20 OUTPUT 70914; "CLOS (@10312)" !Close channel row 03,!column 12 on the firstmodule in the switchbox

30 OUTPUT 70914; "CLOS? (@10312)" !Query channel40 ENTER 70914; Value !Enter result50 PRINT Value !Print results60 END


Notes:


Chapter 2

Using the Relay Matrix Switches

Using This ChapterThis chapter uses typical examples to show how to use the Relay MatrixSwitch modules. It contains the following sections:

• Relay Matrix Switch Commands/States . . . . . . . . . . . . . . . . . .31• Relay Matrix Switch Functions . . . . . . . . . . . . . . . . . . . . . . . . .33

NOTE All examples in this chapter use GPIB select code 7, primary address 09,and secondary address 14 (LADDR = 112) for the modules.

Relay Matrix Switch Commands/StatesThis section shows the relay matrix commands used in this chapter, thequery commands, and the power-on/reset states.

Relay Matrix SwitchCommands

This table shows some of the commands used in this chapter. Commandsin square brackets ([ ]) are implied and are not sent with the command.See Chapter 3 for additional information.

Command Description

INITiate[:IMMediate] Starts the scan sequence and closes the first channel in thechannel_list.

[ROUTe:]CLOSe <channel_list> Closes the channels in the channel_list.

[ROUTe:]CLOSe? <channel_list> Queries the state of the channels in the channel_ list.

[ROUTe:]OPEN <channel_list> Opens the channels in the channel_list.

[ROUTe:]OPEN? <channel_list> Queries the state of channels in the channel_ list.

[ROUTe:]SCAN <channel_list> Defines the channel_list to be scanned. Channels specifiedare closed one at a time.

TRIGger:SOURce <source>

source = BUS | EXT | HOLD | IMM | TTLT | ECLT

Selects the trigger source to advance the scan.

*CLS Clears switchbox status registers and error queue.

*RST Resets the hardware to a known state.

Using the Relay Matrix Switches 31Chapter 2

Relay Matrix SwitchQuery Commands

All query commands end with a "?". All data is sent to the output bufferwhere you can retrieve it into your computer. The following are valid querycommands:

Power-on and ResetConditions

When power is first applied to the Relay Matrix Switch modules or *RST(reset) is executed, all relays are open. This table lists the parametersand default values for the switchbox functions described in this chapter.Commands in brackets ( [ ] ) are implied and are not sent with the command.

Query Description

ARM:COUN? Number of Scanning Cycles

CLOS? Channel Closed

INIT:CONT? Scanning State

OPEN? Channel Open

OUTP:ECLTn? ECL Trigger Output State

OUTP:EXT? External Trigger Output State

OUTP:TTLTn? TTL Trigger Output State

STAT:OPER:ENAB? Status Operation Enable

STAT:OPER[:EVEN]? Status Operation Event

SYST:CDES? <number> Module Description

SYST:CTYP? <number> Module Type

SYST:ERR? System Error

TRIG:SOUR? Trigger Source

Parameter Default Description

ARM:COUNt 1 Number of scanning cycles is 1

TRIGger:SOURce IMM Will advance scanning cyclesautomatically

INITiate:CONTinuous OFF Number of scanning cycles set byARM:COUNt

OUTPut[:EXTernal][:STATe] OFF Trigger output from EXTernal,TTLTrg, or ECLTrg sources isdisabled

32 Using the Relay Matrix Switches Chapter 2

Relay Matrix Switch FunctionsThis section provides some examples for Relay Matrix Switch modulefunctions, including:

• Checking Module Identification• Switching Channels• Recalling and Saving States• Detecting Error Conditions• Synchronizing Relay Switch Modules

Checking ModuleIdentification

You can use the *RST, *CLS, *IDN?, CTYP?, and CDES? commands toreset and identify the Relay Matrix Switch modules.

Example: IdentifyingRelay Matrix Switch

Modules

This program uses the *RST, *CLS, *IDN?, CTYP?, and CDES? commandsto reset and identify the Relay Matrix Switch modules.

10 DIM A$[50]; B$[50], C$[50]

20 OUTPUT 70914; "*RST; *CLS; *IDN?"

30 ENTER 70914; A$

40 OUTPUT 70914; "SYST:CDES? 1"

50 ENTER 70914; B$

60 OUTPUT 70914; "SYST:CTYP? 1"

70 ENTER 70914; C$

80 PRINT A$

90 PRINT B$

100 PRINT C$

110 END

A typical return is:

HEWLETT-PACKARD,SWITCHBOX,0,A.04.00

4x16 2-WIRE MATRIX

HEWLETT-PACKARD,E1469A,0,A.04.00

Switching Channels Use CLOSe <channel_list> to close one or more Relay Matrix Switchchannels, and OPEN <channel_list> to open the channel(s). channel_listhas the following forms.

For the E1468A only, the form is @ssrc where ss = card number (01-99)r = row number (0 to 7 [one digit]) and c = column number (0 to 7 [one digit]).For the E1469A only, the form is @ssrrcc where ss = card number (01-99)rr = row number (00 to 03 [two digits]) and cc = column number (00 to 15[two digits]).

To OPEN or CLOSe multiple channels, place a comma (,) between thechannel numbers. For example, to close channels 10103 and 10201,execute CLOS 10103,10201. To OPEN or CLOSe a contiguous range ofchannels, place a colon (:) between the first and last channel numbers.


Example:Opening/Closing

Rows/Columns

This program shows how to close and open row 2 (02), column 14 on anE1469A Relay Matrix Switch module (card #1):

10 DISP "TEST E1469A MATRIX"

20 OUTPUT 70914; "ROUT:CLOS (@10214)"

30 OUTPUT 70914; "ROUT:OPEN (@10214)"

40 END

Example: SequencingChannels (E1468A)

This program sequences through each channel on an E1468A 8x8 RelayMatrix Switch Module.

10 DIM E$[128]

20 FOR I = 0 TO 7

30 FOR J = 0 TO 7

40 A = 100 + 10 * I + J

50 OUTPUT 70914; "ROUT:CLOS (@ ";A;")"

60 OUTPUT 70914; "ROUT:CLOS? (@100:177)"

70 ENTER 70914; E$

80 PRINT "CHANNEL CLOSED NOW"; E$

90 OUTPUT 70914; "ROUT:OPEN (@ ";A;")"

100 NEXT J

110 NEXT I

120 END

Example: SequencingChannels (E1469A)

To use this program with the E1469A 4x16 Relay Matrix Switch Module,replace lines 20, 30, 40, and 60 with:

20 FOR I = 0 TO 3

30 FOR J = 0 TO 15

40 A = 10000 + 100 * I + J

60 OUTPUT 70914; "ROUT:CLOS? (@10000:10315)"

Recalling andSaving States

The *SAV <numeric_state> stores the current state of the switchboxchannels. Up to 10 states may be stored by specifying the <numeric_state>as an integer 0 through 9. The following states are stored:

• Channel relay states (open or closed)• ARM:COUNt• TRIGger:SOURce <source>• OUTPut[:EXTernal][:STATe]• INITiate:CONTinuous

The *RCL <numeric_state> command recalls the specified previously storedstate. If the specified <numeric_state> does not exist, the Relay MatrixSwitch module configures to its power-on/reset states.


Example: Saving andRecalling States

This examples closes channels on the module and saves the state asnumber 5. When the saved state is recalled, only the channels that wereclosed in the stored state are closed. All other channels in the switchboxare opened.

10 OUTPUT 70914;"CLOS (@10000:10015)" !Close ch 00 through 15

20 OUTPUT 70914; "*SAV 5" !Save as state 5

30 OUTPUT 70914; "*RST; *CLS" !Reset and clear status reg

40 OUTPUT 70914; "CLOS (@10113,10112,10200)" !Close ch 13, 12, 00

50 OUTPUT 70914; "*RCL 5" !Recall the stored state.

60 END

Detecting ErrorConditions

You can use the SYST:ERR? command to poll the switchbox for errors.You can also use interrupts to signal the controller when an error occurs.

Example: Illegal ChannelClosure Error

This program attempts an illegal channel closure and polls for the errormessage:

10 DIM Err_num$[256]

20 OUTPUT 70914; "CLOS (@10500)"

30 OUTPUT 70914; "SYST:ERR?"

40 ENTER 70914; Err_num$

50 PRINT Err_num$

Example: UsingInterrupts to Signal

Errors

This program uses an interrupt to signal the controller when an error occurs.The SYST:ERR? command returns the error message.

10 ON INTR 7 CALL Errmsg !Call subprogram Errmsg if a module!programming error occurs

20 ENABLE INTR 7:2 !Enable the computer to respond to theinterrupt from the module

30 OUTPUT 70914; "*SRE 32; *ESE 64" !Unmask the Event Status bit in the module’s!Status Register (*SRE 32). Unmask the!module error conditions in its Standard EventStatus Register (*ESE 64).

40 OUTPUT 70914 ". . . . !Continue program execution

.

.

100 END

110 SUB Errmsg

120 DIM Message$[256]

130 CLEAR 709 !When an error occurs, clear the module to!regain control.

140 B = SPOLL (70914) !Execute a Serial Poll to clear the Service!Request bit in the Status Register.

150 REPEAT


160 OUTPUT 70914; "SYST:ERR?" !Read all error messages in the error queue.

170 ENTER 70914; Code, Message$

180 PRINT Code, Message$

190 UNTIL Code = 0

200 OUTPUT 70914; "*CLS" !Clear all bits in the module Standard EventStatus Register

210 STOP

220 SUBEND

SynchronizingRelay Matrix

Switches

You can use the *OPC? common command to synchronize a Relay MatrixSwitch module to external measurement instruments.

Example: Synchronizinga Relay Matrix Switch

This example shows one way to synchronize a Relay Matrix Switch modulewith measurement instruments. In this example, the module switches asignal to a multimeter. The program then verifies that the channel is closedbefore the multimeter begins its measurement.

10 OUTPUT 70914; "*RST" !Reset the module

20 OUTPUT 70914; "CLOS (@10012)" !Close a channel

30 OUTPUT 70914; "*OPC?" !Wait for operation complete

40 ENTER 70914; Opc_value

50 OUTPUT 70914; "CLOS? (@10012)" !Test that the channel is closed

60 ENTER 70914; A

70 OUTPUT 70903; "MEAS:VOLT:DC?" !When channel is closed, measure!the voltage

80 ENTER 70903; Meas_value

90 PRINT Meas_value !Print the measured value

100 END


Chapter 3Relay Matrix Switch Command Reference

About This ChapterThis chapter describes the Standard Commands for ProgrammableInstruments (SCPI) and the IEEE 488.2 Common commands for theE1468A and E1469A Relay Matrix Switch modules. See the appropriatecommand module user’s manual for additional information on SCPI andCommon commands. This chapter contains the following sections:

• Command Types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37• SCPI Command Reference . . . . . . . . . . . . . . . . . . . . . . . . . . .40• IEEE 488.2 Common Commands Quick Reference. . . . . . . . .65• SCPI Commands Quick Reference . . . . . . . . . . . . . . . . . . . . .66

Command TypesCommands are separated into two types: IEEE 488.2 Commoncommands and SCPI commands.

CommonCommand Format

The IEEE 488.2 standard defines the Common commands that performfunctions like reset, self-test, status byte query, etc. Common commandsare four or five characters in length, always begin with an asterisk (*), andmay include one or more parameters. The command keyword isseparated from the first parameter by a space character. Someexamples of Common commands are:

*RST, *ESE <mask>, *STB?

SCPI CommandFormat

SCPI commands perform functions like closing switches, makingmeasurements, and querying instrument states or retrieving data.A subsystem command structure is a hierarchical structure that usuallyconsists of a top-level (or root) command, one or more lower-levelcommands, and their parameters. The following example shows part ofa typical subsystem:

[ROUTe:]CLOSe <channel_list>SCAN <channel_list>

MODE?

[ROUTe:] is the optional root command, CLOSe and SCAN aresecond-level commands with parameters, and :MODE? is a third-levelcommand. [ROUTe:] is an implied command and is, therefore, optional.

Relay Matrix Switch Command Reference 37Chapter 3

Command Separator A colon (:) always separates one command from the next lower-levelcommand, such as [ROUTe:]SCAN:MODE? Colons separate the rootcommand from the second-level command ([ROUTe:]SCAN) and thesecond level from the third level (SCAN:MODE?).

Abbreviated Commands The command syntax shows most commands as a mixture of upper- andlowercase letters. The uppercase letters indicate the abbreviatedspelling for the command. For shorter program lines, send theabbreviated form. For better program readability, you may send theentire command. The instrument will accept either the abbreviated formor the entire command.

For example, if the command syntax shows DIAGnostic, DIAG andDIAGNOSTIC are both acceptable forms. Other forms of DIAGnostic,such as DIAGN or DIAGNOS will generate an error. You may use upper-or lowercase letters. Therefore, DIAGNOSTIC, diagnostic, andDiAgNoStIc are all acceptable.

Implied Commands Implied commands appear in square brackets ([ ]) in the commandsyntax. The brackets are not part of the command and are not sent to theinstrument. Suppose you send a second-level command but do not sendthe preceding implied command. In this case, the instrument assumesyou intended to use the implied command and it responds as if you hadsent it. Examine the [SOURce] subsystem shown below:

[SOURce:]PULSe:COUNt:COUNt?:PERiod:PERiod?

The root command [SOURce:] is an implied command. To set theinstrument’s pulse count to 25, you can send either of the followingcommand statements:

SOUR:PULS:COUN 25 or PULS:COUN 25

Variable CommandSyntax

Some commands have what appears to be a variable syntax. Forexample, OUTP:ECLTn and OUTP:TTLTn. In these commands, the n isreplaced by a number. No space is left between the command and thenumber because the number is not a parameter. The number is part ofthe command syntax. In the case of OUTP:ECLTn, n can range from 0to 1. In OUTP:TTLTn, n can range from 0 through 7.

38 Relay Matrix Switch Command Reference Chapter 3

Parameter Types The following table contains explanations and examples of parametertypes you may see in this chapter.

Linking Commands Linking IEEE 488.2 Common Commands with SCPI Commands. Use asemicolon (;) between the commands. For example, *RST;OUTP ON orTRIG:SOUR HOLD;*TRG.

Linking Multiple SCPI commands. Use both a semicolon (;) and a colon (:)between the commands, such as ARM:COUN 1;:TRIG:SOUR EXT.

SCPI Commands ReferenceThis section describes the Standard Commands for ProgrammableInstruments (SCPI) commands for the Relay Matrix Switch modules.Commands are listed alphabetically by subsystem and within eachsubsystem.

Type Explanations and Examples

Boolean Boolean parameters represent a single binary conditionthat is either true or false (ON, OFF, 1, 0). Any non-zerovalue is considered true.

Discrete Discrete parameters selects from a finite number ofvalues. These parameters use mnemonics to representeach valid setting. An example is TRIGger:SOURce<source>, where source can be BUS, EXTernal, HOLD,IMMediate, ECLTrgn, or TTLTrgn.

Numeric Numeric Parameters are commonly used decimalrepresentations of numbers including optional signs,decimal points, and scientific notation (for example, 123,123E2, -123, -1.23E2, .123, 1.23E-2, 1.23000E- 01).Special cases include MIN, MAX, DEFault, and INFinity.

Optional Optional Parameters are shown within square brackets([]). The brackets are not part of the command and arenot sent to the instrument. If you do not specify a valuefor an optional parameter, the instrument chooses adefault value.

For example, consider ARM:COUNt?[MIN|MAX]. If yousend the command without specifying a parameter, thepresent ARM:COUNt value is returned. If you send theMIN parameter, the command returns the minimumcount available. If you send the MAX parameter, thecommand returns the maximum count available. Be sureto place a space between the command and theparameter.


ABORt

The ABORt command subsystem stops a scan in progress when thescan is enabled via the interface and the trigger source isTRIGger:SOURce BUS or TRIGger:SOURce HOLD.

Subsystem Syntax ABORt

Comments ABORt Actions: ABORt stops the scan and invalidates the currentchannel_list.

Stopping a Scan Enabled Via Interface: When a scan is enabled via aninterface, an interface CLEAR command (CLEAR 7) can be used to stopthe scan. When the scan is enabled via the interface and TRIG:SOURBUS or HOLD is set, you can use ABORt to stop the scan.

Restarting a Scan: Use the INIT command to restart the scan.

Related Commands: ARM, INITiate:CONTinuous, [ROUTe:]SCAN,TRIGger

Example Stopping a Scan with ABORt

This example stops a (continuous) scan in progress.

TRIG:SOUR BUS ! *TRG command is trigger source

INIT:CONT ON ! Set continuous scanning

SCAN (@10000:10003) ! Scan channels 00-03

INIT ! Start scan, close channel 00

.

.ABOR ! Abort scan in progress.


ARM

The ARM subsystem selects the number of scanning cycles (1 to 32,767)for each INITiate command.

Subsystem Syntax ARM:COUNt <number> MIN | MAX:COUNt? [MIN | MAX]

ARM:COUNt

ARM:COUNt <number> MIN | MAX allows scanning cycles to occur amultiple of times (1 to 32,767) with one INITiate command whenINITiate:CONTinuous OFF | 0 is set. MIN sets 1 cycle and MAX sets32,767 cycles.

Parameters

Comments Number of Scans: Use only values between 1 and 32,767 for the numberof scanning cycles.

Related Commands: ABORt, INITiate[:IMMediate]

*RST Condition: ARM:COUNt 1

Example Setting Ten Scanning Cycles

This example sets a Relay Matrix Switch module for 10 scans ofchannels 00 through 03.

ARM:COUN 10 !Set 10 scans per INIT command

SCAN (@10000:10003) !Scan channels 00-03

INIT !Start scan, close channel 00

Name Type Range of Values Default Value

<number> numeric 1-32,767 | MIN | MAX 1


ARM:COUNt?

ARM:COUNt? [MIN | MAX] returns the current number of scanning cyclesset by ARM:COUNt. The current number of scan cycles is returned whenMIN or MAX is not supplied. With MIN or MAX as a parameter, MINreturns 1 and MAX returns 32767.

Parameters

Comments Related Command: INITiate[:IMMediate]

Example Query Number of Scans

This example sets a switchbox for 10 scanning cycles and queries thenumber of scan cycles set. The ARM:COUN? command returns 10.

ARM:COUN 10 !Set 10 scans per INIT command

ARM:COUN? !Query number of scans


MIN | MAX numeric MIN = 1, MAX = 32,767 current cycles


INITiate

The INITiate command subsystem selects continuous scanning cyclesand starts the scanning cycle.

Subsystem Syntax INITiate:CONTinuous <mode>:CONTinuous?[:IMMediate]

INITiate:CONTinuous

INITiate:CONTinuous <mode> enables or disables continuous scanningcycles for the switchbox.

Parameters

Comments Continuous Scanning Operation: Continuous scanning is enabled withthe INITiate:CONTinuous ON or INITiate:CONTinuous 1 command.Sending the INITiate[:IMMediate] command closes the first channel inthe channel list. Each trigger from the source specified by theTRIGger:SOURce command advances the scan through the channel list.A trigger at the end of the channel list closes the first channel in thechannel list and the scan cycle repeats.

Non-Continuous Scanning Operation: Non-continuous scanning isenabled with the INITiate:CONTinuous OFF or INITiate:CONTinuous 0command. Sending the INITiate[:IMMediate] command closes the firstchannel in the channel list. Each trigger from the source specified by theTRIGger:SOURce command advances the scan through the channel list.At the end of the scanning cycle, the last channel in the channel list isclosed and the scanning cycle stops.

Stopping Continuous Scan: See the ABORt command.

Related Commands: ABORt, ARM:COUNt, TRIGger:SOURce

*RST Condition: INITiate:CONTinuous OFF | 0


<mode> boolean 0 | 1 | OFF | ON 0 | OFF


Example Enabling Continuous Scanning

This example enables continuous scanning of channels 00 through 03 ofa single-module switchbox. Since TRIGger:SOURce IMMediate (default)is set, use an interface clear command (such as CLEAR) to stop thescan.

INIT:CONT ON !Enable continuous scanning


INIT !Start scan cycle, close chan 00

INITiate:CONTinuous?

INITiate:CONTinuous? queries the scanning state. With continuousscanning enabled, the command returns 1. With continuous scanningdisabled, the command returns 0.

Example Query Continuous Scanning State

This example enables continuous scanning of a switchbox and queriesthe state. Since continuous scanning is enabled, INIT:CONT? returns 1.

INIT:CONT ON !Enable continuous scanning

INIT:CONT? !Query continuous scanning state

INITiate[:IMMediate]

INITiate[:IMMediate] starts the scanning process and closes the firstchannel in the channel list. Successive triggers from the source selectedby the TRIGger:SOURce command advance the scan through thechannel list.

Comments Starting the Scanning Cycle: The INITiate[:IMMediate] command startsscanning by closing the first channel in the channel list. Each triggerreceived advances the scan to the next channel in the channel list.An invalid channel list definition causes an error (see [ROUTe:]SCAN).

Stopping Scanning Cycles: See ABORt.

Example Enabling a Single Scan

This example enables a single scan of channels 00 through 03 of asingle-module switchbox. The trigger source to advance the scan isimmediate (internal) triggering set with TRIGger:SOURce:IMMediate.


INIT !Begin scan, close channel 00


OUTPut

The OUTPut subsystem selects the source of the output triggergenerated when a channel is closed during a scan. The selected outputcan be enabled, disabled, and queried. The three available outputs arethe ECLTrg and TTLTrg trigger buses and the E1406 Command Modulefront panel Trig Out port.

Subsystem Syntax OUTPut:ECLTrgn (:ECLTrg0 or :ECLTrg1)

[:STATe] <mode>[:STATe]?

[:EXTernal][:STATe] <mode>[:STATe]?

:TTLTrgn (:TTLTrg0 through :TTLTrg7)[:STATe] <mode>[:STATe]?

OUTPut:ECLTrg[:STATe]

OUTPut:ECLTrgn[:STATe] <mode> selects and enables which ECLTrigger bus line (0 or 1) will output a trigger when a channel is closedduring a scan. This is also used to disable a selected ECL Trigger busline. n specifies the ECL Trigger bus line (0 or 1) and mode enables(ON or 1) or disables (OFF or 0) the specified ECLTrg bus line.

Parameters

Comments Enabling ECL Trigger Bus: When enabled, a pulse is output from theselected ECL Trigger bus line (0 or 1) after each channel is closed duringa scan. If disabled, a pulse is not output. The output is a negative-goingpulse.

ECL Trigger Bus Line Shared by Switchboxes: Only one switchboxconfiguration can use the selected trigger at a time. When enabled, theselected ECL Trigger bus line (0 or 1) is pulsed by the switchbox eachtime a scanned channel is closed. To disable the output for a specificswitchbox, send the OUTPut:ECLTrgn OFF or 0 command for thatswitchbox.


n numeric 0 or 1 N/A



One Output Selected at a Time: Only one output (ECLTrg 0 or 1; TTLTrg0, 1, 2, 3, 4, 5, 6, or 7; or EXTernal) can be enabled at one time. Enablinga different output source will automatically disable the active output. Forexample, if TTLTrg1 is the active output, and TTLTrg4 is enabled,TTLTrg1 will become disabled and TTLTrg4 will become the activeoutput.

Related Commands: [ROUTe:]SCAN, TRIGger:SOURce,OUTPut:ECLTrg[:STATe]?

*RST Condition: OUTPut:ECLTrg[:STATe] OFF (disabled).

Example Enabling ECL Trigger Bus Line 0

OUTP:ECLT0:STAT 1 ! Enable ECL Trigger bus line 0 to!output pulse after each scanned!channel is closed.

OUTPut:ECLTrg[:STATe]?

OUTPut:ECLTrg[:STATe]? queries the present state of the specified ECLTrigger bus line. The command returns 1 if the specified ECLTrg bus lineis enabled or 0 if disabled.

Example Query ECL Trigger Bus Enable State

This example enables ECL Trigger bus line 0 and queries the enablestate. The OUTPut:ECLTrgn? command returns 1 since the port isenabled.

OUTP:ECLT0:STAT 1 ! Enable ECL Trigger bus line 0

OUTP:ECLT0? ! Query bus enable state

OUTPut[:EXTernal][:STATe]

OUTPut[:EXTernal][:STATe] <mode> enables or disables the Trig Out porton the E1406 Command Module to output a trigger when a channel isclosed during a scan. ON | 1 enables the port and OFF | 0 disables theport.

Parameters




Comments Enabling Trig Out Port: When enabled, a pulse is output from the Trig Outport after each scanned switchbox channel is closed. If disabled, a pulseis not output from the port after channel closures. The output is anegative going pulse.

Trig Out Port Shared by Switchboxes: Only one switchbox configurationcan use the selected trigger at a time. When enabled, the Trig Out portis pulsed by the switchbox each time a scanned channel is closed. Todisable the output for a specific switchbox, send the OUTP OFF or 0command for that switchbox.


Related Commands: [ROUTe:]SCAN, TRIGger:SOURce,OUTPut[:EXTernal][:STATe]?

*RST Condition: OUTPut[:EXTernal][:STATe] OFF (disabled).

Example Enabling Trig Out Port

OUTP:EXT 1 !Enable Trig Out port to output!pulse after each scanned channel!is closed

OUTPut[:EXTernal][:STATe]?

OUTPut[:EXTernal][:STATe]? queries the present state of the Trig Outport. The command returns 1 if the port is enabled or 0 if disabled.

Example Query Trig Out Port Enable State

This example enables the Trig Out port and queries the enable state.The OUTPut? command returns 1 since the port is enabled.

OUTP:EXT ON !Enable Trig Out port

OUTP:EXT? !Query port enable state


OUTPut:TTLTrg[:STATe]

OUTPut:TTLTrgn[:STATe] <mode> selects and enables which TTLTrigger bus line (0 to 7) will output a trigger when a channel is closedduring a scan. This is also used to disable a selected TTL Trigger busline. n specifies the TTL Trigger bus line (0 to 7) and mode enables(ON or 1) or disables (OFF or 0) the specified TTL Trigger bus line.

Parameters

Comments Enabling TTL Trigger Bus: When enabled, a pulse is output from theselected TTL Trigger bus line (0 to 7) after each channel in the switchboxis closed during a scan. If disabled, a pulse is not output. The output is anegative-going pulse.

TTL Trigger Bus Line Shared by Switchboxes: Only one switchboxconfiguration can use the selected TTL Trigger at a time. When enabled,the selected TTL Trigger bus line (0 to 7) is pulsed by the switchbox eachtime a scanned channel is closed. To disable the output for a specificswitchbox, send the OUTPut:TTLTrgn OFF or 0 command for thatswitchbox.


Related Commands: [ROUTe:]SCAN, TRIGger:SOURce,OUTPut:TTLTrg[:STATe]?

*RST Condition: OUTPut:TTLTrg[:STATe] OFF (disabled).

Example Enabling TTL Trigger Bus Line 7

OUTP:TTLT7:STAT 1 ! Enable TTL Trigger bus line 7 to!output pulse after each scanned!channel is closed


n numeric 0 or 1 N/A



OUTPut:TTLTrg[:STATe]?

OUTPut:TTLTrg[:STATe]? queries the present state of the specified TTLTrigger bus line. The command returns 1 if the specified TTLTrg bus lineis enabled or 0 if disabled.

Example Query TTL Trigger Bus Enable State

This example enables TTL Trigger bus line 7 and queries the enablestate. The OUTPut:TTLTrgn? command returns 1 since the port isenabled.

OUTP:TTLT7:STAT 1 !Enable TTL Trigger bus line 7

OUTP:TTLT7? !Query bus enable state


[ROUTe:]

The [ROUTe:] subsystem controls switching and scanning operations forRelay Matrix Switch modules in a switchbox.

NOTE The [ROUTe:] subsystem opens all previously closed relays. Therefore, itshould be the first relay configuration command.

Subsystem Syntax [ROUTe:]CLOSe <channel_list>CLOSe? <channel_list>OPEN <channel_list>OPEN? <channel_list>SCAN <channel_list>

[ROUTe:]CLOSe

[ROUTe:]CLOSe <channel_list> closes the Relay Matrix Switch channelsspecified by channel_list.

Parameters

Comments channel_list Form: For the E1468A, channel_list has the form (@ssrc)where ss = card number (01-99), r = row number, and c = columnnumber. For the E1469A, channel_list has the form (@ssrrcc) wheress = card number (01-99), rr = row number, and cc = column number.

Closing Channels (E1468A Only):

• For a single channel, use [ROUT:]CLOS (@ssrc)• For multiple channels, use [ROUT:]CLOS (@ssrc,ssrc,...)• For sequential channels, use [ROUT:]CLOS (@ssrc:ssrc)• for groups of sequential channels use [ROUT:]CLOS

(@ssrc:ssrc,ssrc:ssrc).

You can use any combination of these commands. However, closureorder for multiple channels with a single command is not guaranteed.


<channel_list> numeric E1468A: r = 0 to 7c = 0 to 7

E1469A: rr = 00 to 03cc =00 to 15

N/A


Closing Channels (E1469A Only):

• For a single channel, use [ROUT:]CLOS (@ssrrcc)• For multiple channels, use [ROUT:]CLOS (@ssrrcc,ssrrcc,...)• For sequential channels, use [ROUT:]CLOS (@ssrrcc:ssrrcc)• for groups of sequential channels use [ROUT:]CLOS

(@ssrrcc:ssrrcc,ssrrcc:ssrrcc).


Related Commands: [ROUTe:]OPEN, [ROUTe:]CLOSe?

*RST Condition: All channels open.

Example Closing Relay Matrix Switch Module Channels

This example closes channels 10100 and 20013 of a two-moduleswitchbox (card numbers 01 and 02).

CLOS (@10100,20013) !Close channels 10100 and!20013. 10100 closes row 01,!column 00 of card #1 and 20013!closes row 00, column 13 on!card #2.

[ROUTe:]CLOSe?

[ROUTe:]CLOSe? <channel_list> returns the current state of thechannel(s) queried. channel_list has the form (@ssrc) or (@ssrrcc) (see[ROUTe:]CLOSe for definition). The command returns 1 if channel(s) areclosed or returns 0 if channel(s) are open.

Comments Query is Software Readback: The [ROUTe:]CLOSe? command returnsthe current software state of the channel(s) specified. It does not accountfor relay hardware failures. A maximum of 127 channels at a time can bequeried for a multi-module switchbox.

Example Query Channel Closures

This example closes channels 10100 and 20013 of a two-moduleswitchbox and queries channel closure. Since the channels areprogrammed to be closed, 1, 1 is returned as a string.

CLOS (@10100,20013) !Close channels 10100 and!20013. 10100 closes row 01,!column 00 of card #1 and 20013!closes row 00, column 13 on!card #2.

CLOS? (@10100,20013) !Query channel closures


[ROUTe:]OPEN

[ROUTe:]OPEN <channel_list> opens the Relay Matrix Switch channelsspecified by channel_list.

Parameters


Opening Channels (E1468A Only):

• For a single channel, use [ROUT:]OPEN (@ssrc)• For multiple channels, use [ROUT:]OPEN (@ssrc,ssrc,...)• For sequential channels, use [ROUT:]OPEN (@ssrc:ssrc)• for groups of sequential channels use [ROUT:]OPEN



Opening Channels (E1469A Only):

• For a single channel, use [ROUT:]OPEN (@ssrrcc)• For multiple channels, use [ROUT:]OPEN (@ssrrcc,ssrrcc,...)• For sequential channels, use [ROUT:]OPEN (@ssrrcc:ssrrcc)• for groups of sequential channels use [ROUT:]OPEN



Related Commands: [ROUTe:]CLOSe, [ROUTe:]OPEN?


Example Opening Channels

This example opens channels 10100 and 20013 of a two-moduleswitchbox (card numbers 01 and 02).

OPEN (@10100,20013) !Open channels 10100 and 20013



E1469A: rr = 00 to 03cc =00 to 15

N/A


[ROUTe:]OPEN?

[ROUTe:]OPEN? <channel_list> returns the current state of the channel(s)queried. channel_list has the form (@ssrc) or (@ssrrcc) (see[ROUTe:]OPEN for definition). The command returns 1 if channel(s) areopen or returns 0 if channel(s) are closed.

Comments Query is Software Readback: The [ROUTe:]OPEN? command returns thecurrent software state of the channels specified. It does not account forrelay hardware failures. A maximum of 127 channels at a time can bequeried for a multi-module switchbox.

Example Query Channel Open State

This example opens channels 10100 and 20013 of a two-moduleswitchbox and queries channel 20013 state. Since channel 20013 isprogrammed to be open, 1 is returned.

OPEN (@10100,20013) !Open channels 10100 and 20013

OPEN? (@20013) !Query channel open state

[ROUTe:]SCAN

[ROUTe:]SCAN <channel_list> defines the channels to be scanned.

Parameters


Defining Scan List: When [ROUTe:]SCAN is executed, the channel_list ischecked for valid card and channel numbers. An error is generated foran invalid channel_list.



E1469A: rr = 00 to 03cc =00 to 15

N/A


Scanning Channels (E1468A Only):

• For a single channel, use [ROUT:]SCAN (@ssrc)• For multiple channels, use [ROUT:]SCAN (@ssrc,ssrc,...)• For sequential channels, use [ROUT:]SCAN (@ssrc:ssrc)• for groups of sequential channels use [ROUT:]SCAN



Scanning Channels (E1469A Only):

• For a single channel, use [ROUT:]SCAN (@ssrrcc)• For multiple channels, use [ROUT:]SCAN (@ssrrcc,ssrrcc,...)• For sequential channels, use [ROUT:]SCAN (@ssrrcc:ssrrcc)• for groups of sequential channels use [ROUT:]SCAN



Scanning Operation: When a valid channel_list is defined,INITiate[:IMMediate] begins the scan and closes the first channel in thechannel_list. Successive triggers from the source specified byTRIGger:SOURce advance the scan through the channel_list. At the endof the scan, the last trigger opens the last channel.

Stopping Scan: See ABORt.

Related Commands: TRIGger:SOURce


Example Scanning Channels

This example sets the channels to be scanned from 100 to 200 for asingle-module switchbox and initiates the scan sequence.

SCAN (@100,200) !Set scan sequence from ch 100through 200

INIT !Begin scan and close ch 100


STATus

The STATus subsystem reports the bit values of the Operation StatusRegister (in the command module). It also allows you to unmask the bitsyou want reported from the Standard Event Register and to read thesummary bits from the Status Byte register.

Subsystem Syntax STATus:OPERation

:CONDition?:ENABle <unmask>:ENABle?[:EVENt?]

:PRESet

The STATus system contains four software registers that reside in aSCPI driver, not in the hardware (see Figure 3-1) Two registers are underIEEE 488.2 control: the Standard Event Status Register (*ESE?) and theStatus Byte Register (*STB).

The Operational Status bit (OPR), Service Request bit (RSQ), StandardEvent summary bit (ESB), Message Available bit (MAV) andQuestionable Data bit (QUE) in the StatusByte Register (bits 7, 6, 5, 4and 3 respectively) can be queried with the *STB? command.

Use the *ESE? command to query the unmask value for the StandardEvent Status Register (the bits you want logically OR’d into the summarybit). The registers are queried using decimal weighted bit values. Thedecimal equivalents for bits 0 through 15 are included in Figure 3-1.

A numeric value of 256 executed in a STATus:OPERation:ENABle<unmask> command allows only bit 8 to generate a summary bit. Thedecimal value for bit 8 is 256.

The decimal values are also used in the inverse manner to determinewhich bits are set from the total value returned by an EVENt orCONDition query. The SWITCH driver exploits only bit 8 of OperationStatus Register. This bit is called the Scan Complete bit which is setwhenever a scan operation completes. Since completion of a scanoperation is an event in time, bit 8 will never appear set whenSTAT:OPER:COND? is queried. However, bit 8 is set with theSTAT:OPER:EVENt? query command.


STATus:OPERation:CONDition?

STATus:OPERation:CONDition? returns the state of the ConditionRegister in the Operation Status Group. The state represents conditionswhich are part of the instrument’s operation. The switch module driverdoes not set bit 8 in this register (see STATus:OPERation[:EVENt]?).

Figure 3-1. E1468A/E1469A Status System Register Diagram

+ "OR"

3456

"OR"

7

210

+

Power On

Command ErrorExecution Error

Device Dependent ErrorQuery Error

Operation Complete

EV EN

StatusByte

Request Service

Output Buffer

Standard Event Register

*SRE <unmask>*SRE?

*STB?

Status Byte Register

QUE = Questionable Data

NOTE:

MAV = Message AvailableESB = Standard EventRQS = Request Service

C = Condition RegisterEV = Event RegisterEN = Enable Register

<128><64><32><16><8><4><2><1>

<2>

<128>

<4><8><16><32>

<1>

RQSESBMAV

1

76

3

54

2

0

unmask examples:

*ESE 61 unmasks standard event register bits 0,2, 3, 4 and 5 (*ESE 128 only unmasks bit 7).

*SRE 128 unmasks the OPR bit (operation) inthe status byte register. This is effectiveonly if the STAT:OPER:ENAB 256 commandis executed.

STAT:QUES:ENAB 256 unmasks the "Scan Complete"bit.

Operation Complete <128>7

Registerbit

unmaskdecimalweight

+"OR"

OPR

SRQ

SRQ = Sevice Request

SPOLL

*ESE?*ESE <unmask>

*ESR?

ENSRQ ROUTINGhandled by yourapplicationprogram orpassed to thecontroller viaGPIB

User Request

Request ControlSet by *OPC

Related Commandsare *OPC? and *WAI

Set byParser

Automatically

Automatically Set atPower On Conditions

OPR

BitSummary

0123456789

101112131415

+

STATus:OPERation:CONDition?

STATus:OPERation:EVENt?

STATus:OPERation:ENABle

C EV EN

Operation status Register

<32768><16384><8192><4096><2048><1024><512><256><128><64><32><16><8><4><2><1>

"OR"

ScanComplete

SummaryBit

OPR = Operation Status

QUE


STATus:OPERation:ENABle

STATus:OPERation:ENABle <unmask> sets an enable mask to allowevents recorded in the Event Register to send a summary bit to theStatus Byte Register (bit 7). For Relay Matrix Switch modules, when bit8 in the Operation Status Register is set to 1 and is enabled by theSTAT:OPER:ENABle command, bit 7 in the Status Register is set to 1.

Parameters

Comments Setting Bit 7 of the Status Byte Register: STATus:OPERation:ENABle 256sets bit 7 of the Status Byte Register to 1 after bit 8 of the OperationStatus Register is set to 1.

Related Commands: [ROUTe:]SCAN

Example Enabling Operation Status Register Bit 8

STAT:OPER:ENAB 256 !Enables bit 8 of the Operation!Status Enable Register to be!reported to bit 7 (OPR) in the!Status Register.

STATus:OPERation:ENABle?

STATus:OPERation:ENABle? returns the bit value of the Operation StatusRegister.

Comments Output Format: Returns a decimal weighted value from 0 to 65,535indicating which bits are set to true.

Maximum Value Returned: The value returned is the value set by theSTAT:OPER:ENAB <unmask> command. However, the maximumdecimal weighted value used in this module is 256 (bit 8 set to true).

Example Query the Operation Status Enable Register

STAT:OPER:ENAB? !Queries the Operation Status!Enable Register


<unmask> numeric 0 through 65,535 N/A


STATus:OPERation[:EVENt]?

STATus:OPERation[:EVENt]? returns which bits in the Event Register(Operation Status Group) are set. The Event Register indicates whenthere has been a time-related instrument event.

Comments Setting Bit 8 of the Operation Status Register: Bit 8 (Scan Complete) is setto 1 after a scanning cycle completes. Bit 8 returns to 0 (zero) aftersending the STATus:OPERation[:EVENt]? command.

Returned Data After Sending STATus:OPERation[:EVENt]? The commandreturns +256 if bit 8 of the Operation Status Register is set to 1. Thecommand returns +0 if bit 8 of the Operation Status Register is set to 0.

Event Register Cleared: Reading the Event Register with theSTATus:OPERation[:EVENt]? command clears it.

ABORting a Scan: Aborting a scan will leave bit 8 set to 0.

Related Commands: [ROUTe:]SCAN

Example Reading the Operation Status Register After a Scanning Cycle

STAT:OPER? !Returns the bit values of the!Operation Status Register.

read the register value !+256 shows bit 8 is set to 1.!+0 shows bit 8 is set to 0.

STATus:PRESet

STATus:PRESet affects only the Enable Register by setting all EnableRegister bits to 0. It does not affect either the "status byte" or the"standard event status". PRESet does not clear any of the EventRegisters.


SYSTem

The SYSTem subsystem returns the error numbers and error messagesin the error queue of a switchbox and returns the types and descriptionsof modules (cards) in a switchbox.

Subsystem Syntax SYSTem:CDEScription? <number>:CPON <number> | ALL:CTYPe? <number>:ERRor?

SYSTem:CDEScription?

SYSTem:CDEScription? <number> returns the description of a selectedmodule (card) in a switchbox.

Parameters

Comments 8x8 Relay Matrix Module Description: SYSTem:CDEScription? <number>returns: 8x8 Relay Matrix

4x16 Relay Matrix Module Description: SYST:CDEScription? <number>returns: 4x16 Relay Matrix

Example Reading the Description of a Card #1 Module

SYST:CDES? 1 !Returns the description

SYSTem:CPON

SYSTem:CPON <number> | ALLsets the selected module (card) in aswitchbox to its power-on state.

Parameters


<number> numeric 1 through 99 N/A




Comments Matrix Module Power-On State: The power-on state is all channels (relays)open. *RST opens all channels of all modules in a switchbox, whileSYSTem:CPON <number> opens the channels in only the module (card)specified in the command.

Example Setting Card #1 Module to Power-On State

SYST:CPON 1 ! Sets module #1 to power-on!state

SYSTem:CTYPe?

SYSTem:CTYPe? <number> returns the module (card) type of a selectedmodule in a switchbox.

Parameters

Comments 8x8 Relay Matrix Module Model Number: SYSTem:CTYPe? <number>returns HEWLETT-PACKARD,El468A,0,A.02.00 , where the 0 afterE1468A is the module serial number (always 0) and A.02.00 is anexample of the module revision code number.

4x16 Relay Matrix Switch Module Model Number: SYSTem:CTYPe?<number> returns HEWLETT-PACKARD,El469A,0,A.04.00,wherethe 0 after E1469A is the module serial number (always 0) and A.04.00is an example of the module revision code number.

Example Reading the Model Number of a Card #l Module

SYST:CTYP? 1 !Return the model number

SYSTem:ERRor?

SYSTem:ERRor? returns the error numbers and corresponding errormessages in the error queue of a switchbox. See Appendix C for a listingof some switchbox error numbers and messages.

Comments Error Numbers/Messages in the Error Queue: Each error generated by aswitchbox stores an error number and corresponding error message inthe error queue. The error message can be up to 255 characters long.




Clearing the Error Queue: An error number/message is removed from thequeue each time the SYSTem:ERRor? command is sent. The errors arecleared first-in, first-out. When the queue is empty, each followingSYSTem:ERRor? command returns 0, "No error". To clear all errornumbers/messages in the queue, execute the *CLS command.

Maximum Error Numbers/Messages in the Error Queue: The queue holdsa maximum of 30 error numbers/messages for each switchbox. If thequeue overflows, the last error number/message in the queue is replacedby -350, "Too many errors". The least recent error numbers/messagesremain in the queue and the most recent are discarded.

Example Querying the Error Queue

SYST:ERR? !Query the error queue


TRIGger

The TRIGger subsystem controls the triggering operation of relay matrixmodules in a switchbox.

Subsystem Syntax TRIGger[:IMMediate]:SOURce <source>:SOURce?

TRIGger[:IMMediate]

TRIGger[:IMMediate] causes a trigger event to occur when the definedtrigger source is TRIGger:SOURce BUS or TRIGger:SOURce HOLD.

Comments Executing the TRIGger[:IMMediate] Command: A channel list must bedefined with [ROUTe:]SCAN<channel_list> and an INITiate[:IMMediate]command must be executed before TRIGger[:IMMediate] will execute.

BUS or HOLD Source Remains: If selected, the TRIGger:SOURceBUS orTRIGger:SOURceHOLD commands remain in effect after triggering aswitchbox with the TRIGger[:IMMediate] command.

Related Commands: INITiate, [ROUTe:]SCAN

Example Advancing Scan Using TRIGger Command

This example scans a single-module switchbox from channel 00 through03. Since TRIGger:SOURce HOLD is set, the scan is advanced onechannel each time TRIGger is executed.

TRIG:SOUR HOLD !Sets trigger source to HOLD

SCAN (@10000:10003) !Defines channel list


loop statement !Start count loop

TRIG !Advance scan to next channel

increment loop !Increment loop count


TRIGger:SOURce

TRIGger:SOURce <source> specifies the trigger source to advance thechannel list during scanning.

Parameters

Comments Enabling the Trigger Source: The TRIGger:SOURce command onlyselects the trigger source. The INITiate[:IMMediate] command enablesthe trigger source.

Using the TRIG Command: You can use TRIGger[:IMMediate] to advancethe scan when TRIGger:SOURceBUS or TRIGger:SOURceHOLD isselected.

Using External Trigger Inputs: With TRIGger:SOURceEXTernal selected,only one switchbox at a time can use the external trigger input at theEl406 Trig In port. The trigger input is assigned to the first switchbox thatrequested the external trigger source (with a TRIGger:SOURceEXTernalcommand).

Assigning External Trigger: A switchbox assigned withTRIGger:SOURceEXTernal remains assigned to that source until theswitchbox trigger source is changed to BUS, ECLT, HOLD, IMMediate,or TTLT. When the source is changed, the external trigger source isavailable to the next switchbox which requests it (with aTRIGger:SOURceEXTernal command). If a switchbox requests anexternal trigger input already assigned to another switchbox, an error isgenerated.

Using Bus Triggers: To trigger the switchbox with TRIGger:SOURceBUSselected, use the IEEE 488.2 Common command *TRG or the GPIBGroup Execute Trigger (GET) command.

Trig Out Port Shared by Switchboxes: See the OUTPut command.

Related Commands: ABORt, [ROUTe:]SCAN, OUTPut

*RST Condition: TRIGger:SOURce IMMediate

Source Type Description Default

BUS discrete *TRG or GET command IMM

ECLTrgn numeric ECL Trigger bus line IMM

EXTernal discrete Trig In port IMM

HOLD discrete Hold Triggering IMM

IMMediate discrete Immediate Triggering IMM

TTLTrgn numeric TTL Trigger bus line <0 - 7> IMM


Example Scanning Using External Triggers

This example uses external triggering (TRIG:SOUR EXT) to scanchannels 00 through 03 switchbox. The trigger source to advance thescan is the input to the Trig In port on the E1406 Command Module.When INIT is executed, the scan is started and channel 00 is closed.Then each trigger received at the Trig In port advances the scan to thenext channel.

TRIG:SOUR EXT !Select external triggering

SCAN (@10000:10003) !Scan channels 00 through 03


trigger externally !Advance scan to next channel

Example Scanning Using Bus Triggers

This example uses bus triggering (TRIG:SOUR BUS) to scan channels00 through 03 of switchbox. The trigger source to advance the scan is the*TRG command (as set with TRIG:SOUR BUS). When INIT is executed,the scan is started and channel 00 is closed. Then, each *TRG commandadvances the scan to the next channel.

TRIG:SOUR BUS !Select interface (bus) triggering

SCAN (@10000:10003) !Scan channels 00 through 03

INIT !Start scan, close channel 00

loop statement !Loop to scan all channels

*TRG !Advance scan using bus!triggering

increment loop !Increment loop count

TRIGger:SOURce?

TRIGger:SOURce? returns the current trigger source for the switchbox.Command returns BUS, ECLT, EXT, HOLD, IMM, or TTLT for sourcesBUS, ECLTrg, EXTernal, HOLD, IMMediate, or TTLTrg, respectively.

Example Query Trigger Source

This example sets external triggering and queries the trigger source.Since external triggering is set, TRIG:SOUR? returns EXT.

TRIG:SOUR EXT !Set external trigger source

TRIG:SOUR? !Query trigger source


IEEE 488.2 Common Commands Quick ReferenceThe following table lists the IEEE 488.2 Common (*) commands thatapply to the Relay Matrix Switch modules. For more information onCommon Commands, see the ANSI/IEEE Standard 488.2-1987.

Command Command Description

*CLS Clears all status registers (see STATus:OPERation[:EVENt]?) and clears error queue.

*ESE<unmask> Enables Standard Event.

*ESE? Enables Standard Event Query.

*ESR? Standard Event Register Query.

*IDN? Instrument ID Query; returns identification string of the module.

*OPC Operation Complete.

*OPC? Operation Complete Query.

*RCL<n> Recalls the instrument state saved by *SAV. You must reconfigure the scan list.

*RST Resets the module. Opens all channels and invalidates current channel list for scanning.Sets ARM:COUN 1, TRIG:SOUR IMM, and INIT:CONT OFF.

*SAV<n> Stores the instrument state but does not save the scan list.

*SRE<unmask> Service request enable, enables status register bits.

*SRE? Service request enable query.

*STB? Read status byte query.

*TRG Triggers the module to advance the scan when scan is enabled and trigger source isTRIGger:SOURce BUS.

*TST? Self-test. Executes an internal self-test and returns only the first error encountered.Does not return multiple errors. The following is a list of responses you can obtain where“cc” is the card number with the leading zero deleted.

+0 if self test passes.+cc01 for firmware error.+cc02 for bus error (problem communicating with the module).+cc03 for incorrect ID information read back from the module's ID register.+cc10 if an interrupt was expected but not received.+cc11 if the busy bit was not held for a sufficient amount of time.

*WAI Wait to Complete.


SCPI Commands Quick ReferenceThis table summarizes SCPI commands for the Relay Matrix Switchmodules.

Command Description

ABORt Aborts a scan in progress

ARM :COUNt <number> MIN |MAX

:COUNt? [MIN|MAX]

Multiple scans per INIT commandQueries number of scans

INITiate :CONTinuous ON | OFF

:CONTinuous?

[:IMMediate]

Enables/disables continuous scanningQueries continuous scan stateStarts a scanning cycle

OUTPut :ECLTrgn[:STATe] ON|OFF|1|0

:ECLTrgn[:STATe]?

[:EXTernal][:STATe] ON|OFF|1|0

[:EXTernal][:STATe]?

:TTLTrgn[:STATe] ON|OFF|1|0

:TTLTrgn[:STATe]?

Enables/disables the specified ECL trigger lineQueries the specified ECL trigger lineEnables/disables the Trig Out port on the E1406Queries the external stateEnables/disables the specified TTL trigger lineQueries the specified TTL trigger line

[ROUTe:] CLOSe <channel _list>

CLOSe? <channel _list>

OPEN <channel_list>

OPEN? <channel _list>

SCAN <channel_list>

SCAN:MODE NONE|VOLT

SCAN:MODE?

Closes channel(s)Queries channel(s) closedOpens channel(s)Queries channel(s) openedDefines channels for scanningSets scan mode (has no effect on Form C operation)Queries the scan mode

STATus :OPERation:CONDition?

:OPERation:ENABle

:OPERation:ENABle?

:OPERation[:EVENt]?

:PRESet

Returns contents of the Operation Condition RegisterEnables events in the Operation Event Register to be reportedReturns the mask value set by the :ENABle commandReturns the contents of the Operation Event RegisterEnables Register bits to 0

SYSTem :CDEScription? <number>

:CTYPe? <number>

:CPON <number> |ALL

:ERRor?

Returns description of module in a switchboxReturns the module typeOpens all channels on specified module(s)Returns error number/message in a switchbox Error Queue

TRIGger [:IMMediate]

:SOURce BUS

:SOURce EXTernal

:SOURce HOLD

:SOURce IMMediate

:SOURce ECLTrgn

:SOURce TTLTrgn

:SOURce?

Causes a trigger to occurTrigger source is *TRGTrigger source is Trig In (on the command module)Holds off triggeringTrigger source is the internal triggersTrigger is the VXIbus ECL trigger bus line nTrigger is the VXIbus TTL trigger bus line nQueries scan trigger source


Appendix A

Relay Matrix Switch Specifications

Input Characteristics

Maximum Voltage Terminal to Terminal:220 Vdc; 250 Vrms

Maximum Voltage Terminal to Chassis:220 Vdc; 250 Vrms

Maximum Current per Channel (non-inductive):1 Adc or acrms (Vmax <30 Vdc or Vrms)0.3 Adc or acrms (Vmax <220 Vdc or 250 Vrms)

Maximum Power per Channel:40VA

DC Performance

Thermal Offset per Channel:<7µV (differential H-L)

Closed Channel Resistance:<1.5 Ω initially<3.5 Ω at end of relay life

Insulation Resistance (between any two points):

5x106 Ω at 40°C, 95% RH

5x108 Ω at 25°C, 40% RH

AC Performance

Bandwidth (-3dB):1

Z(load) = Z(source) = 50 Ω2-Wire mode (4x16): >10 MHz1-Wire mode (1x128): >3 MHz

Crosstalk Between Channels @10 kHz:2-Wire mode (4x16): <-90 dB1-Wire mode (1x128): <-60 dB

Open Channel Capacitance(channel to channel, channel to common):2-Wire mode (4x16): <-90 dB1-Wire mode (1x128): <-60 dB

Closed Channel Capacitance (Hi-Lo, Lo-Chassis):650/700 pF

General

Module Size / Device Type:C-size VXIbus, Register based, A16/D16Interrupter (levels 1-7, jumper selectable)

Power Requirements:Voltage: +5 V +24 VPeak Module Current (A) 0.10 0.13Dynamic Module Current (A) 0.10 0.02

Relay Life:2

@ No Load: 5x106 Operations

@ Full Load: 105 Operations

Watts/slot:5.0Cooling/slot:0.08 mm H20 @ 0.42 liter/sec

Terminals:Screw type, maximum wire size 16AWG

Operating Temperature: 0° - 55°COperating Humidity: 65% RH, 0° - 40°CNet Weight (kg): 1.6

1 The -3 dB BW is typically >25 MHz2 Relays are subject to normal wear-out based on the number of operations.

Relay Matrix Switch Specifications 67Appendix A

Notes:

68 Relay Matrix Switch Specifications Appendix A

Appendix B

Register-Based Programming

About This AppendixThis appendix contains the information you can use for register-basedprogramming of the E1468A/E1469A Relay Matrix Switch modules.The contents include:

• Register Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69• Reading the Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72• Writing to the Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73

Register AddressingThe E1468A/E1469A Relay Matrix Switch modules are register-basedmodules that do not support the VXIbus word serial protocol. When aSCPI command is sent to the modules, the instrument driver resident inthe command module parses the command and programs the module atthe register level.

AddressingOverview

Register-based programming is a series of reads and writes directly to themodule registers. This can increase throughput speed since it eliminatescommand parsing and allows the use of an embedded controller. It alsoallows use of an alternate VXI controller, eliminating the command module.

To access a specific register for either read or write operations, the addressof the register must be used. Register addresses for the plug-in modules arein an address space known as VXI A16. The exact location of A16 within aVXIbus master’s memory map depends on the design of the VXIbus masteryou are using. For the E1406 Command Module, the A16 space locationstarts at 1F000016.

The A16 space is further divided so that the modules are addressed only atlocations above 1FC00016 within A16. Every module is allocated 64 registeraddresses (4016). The address of a module is determined by its logicaladdress (set by the address switches on the module) times 64 (4016).For the E1468A/E1469A modules, the factory setting is 112 (7016), so theaddresses start at 1C0016.

Register addresses for register-based devices are located in the upper 25%of VXI A16 address space. Every VXI device (up to 256) is allocated a 64byte block of addresses. Figure B-1 shows the register address locationwithin A16. Figure B-2 shows the location of A16 address space in theE1406 Command Module.

Register-Based Programming 69Appendix B

The Base Address When you are reading or writing to a module register, a hexadecimal ordecimal register address is specified. This address consists of a baseaddress plus a register offset. The base address used in register-basedprogramming depends on whether the A16 address space is outside orinside the E1406 Command Module.

Figure B-1. Register Address Locations Within VXI A16

Figure B-2. A16 Address Space in the E1406 Command Module

REGISTERADDRESS

SPACE

A16ADDRESS

SPACE

ID RegisterDevice Type Register

Status/Control Register

*

E1468A/E1469AA16 Register Map

FFFF16

C00016

(49,152)

FFFF16

COOO16

OOOO16

Base Address = COOO16 + (Logical Address 64)16*

49,152 + (Logical Address 64)10

or

Register Address = Base address + Register Offset

*

*

0016

0216

0416

16-BIT WORDSOFFSET

REGISTER

3E163C16

A16ADDRESS

SPACE

A24ADDRESS

SPACE

E1406AAddress Map

SPACEADDRESSREGISTER

Base Address = IFC00016 + (Logical Address 64)16*

2,080,768 + (Logical Address 64)10

or

Register Address = Base address + Register Offset

*

*

16200000

IFCOOO16 20000016

IFOOOO16

*

16(2,080,768)

IFCOOO

FFFFFF16

EOOOOO16

20000016

IF000016

00000016

A16 Register MapE1468/E1469A

Status/Control RegisterDevice Type Register

16040200

16

16

3C 16

3E

REGISTEROFFSET

16

ID Register

16-BIT WORDS

70 Register-Based Programming Appendix B

A16 Address SpaceOutside the Command

Module

When the E1406 Command Module is not part of your VXIbus system, theE1468A/E1469A base address is computed as:

A16base = 1FC00016 + (LADDR16 * 6416)

or (decimal)

A16base = 2,080,768 + (LADDR * 64)

where 1FC00016 (2,080,768) is the starting location of the registeraddresses, LADDR is the module’s logical address, and 64 is the numberof address bytes per VXI device.

For example, a Relay Matrix Switch module’s Status/Control Register hasan offset of 0416. When you write to or read from this register, the offset isadded to the base address to form the register address (using a logicaladdress of 112):

register address = base address + register offset

= 1FC00016 + (112 * 64)16 + 0416

= 1FC00016 + 1C0016 + 0416 = 1FDC0416

or

= 2,080,768 + (112 * 64) + 4

= 2,080,768 + 7168 + 4 = 2,087,940

A16 Address SpaceInside the CommandModule or Mainframe

When the A16 address space is inside the E1406 Command Module,the E1468A/E1469A base address is computed as:

1FC00016 + (LADDR16 * 6416)

or (decimal)

2,080,768 + (LADDR * 64)

where 1FC000h (2,080,768) is the starting location of the VXI A16addresses, LADDR is the module’s logical address, and 64 is the numberof address bytes per register-based device. The E1468A/E1469Afactory-set logical address is 112. If this address is not changed, themodule will have a base address of:

1FC00016 + (7016 * 4016) = 1FC00016 + 1C0016 = 1FDC0016

or (decimal)

2,080,768 + (112 * 64) = 2,080,768 + 7168 = 2,087,936


Register Definitions You can program the E1468A/E1469A modules using their hardwareregisters. The procedures for reading or writing to a register depend on youroperating system and programming language. Whatever the accessmethod, you will need to identify each register with its address.

Reading the RegistersFigures 1-1 and 1-2 (see Chapter 1) show the channels grouped by banks.You can read these Relay Matrix Switch registers:

• Manufacturer ID Register (base + 0016)• Device Type Register (base + 0216)• Status/Control Register (base + 0416)• Bank 0 Relay Control Register (base + 2016)• Bank 1 Relay Control Register (base + 2216)• Bank 2 Relay Control Register (base + 2416)• Bank 3 Relay Control Register (base + 2616)• Bank 4 Relay Control Register (base + 2816)• Bank 5 Relay Control Register (base + 2A16)• Bank 6 Relay Control Register (base + 2C16)• Bank 7 Relay Control Register (base + 2E16)• Channels 0990 - 0996 Relay Control Register (base + 3016)

ManufacturerIdentification

Register

The Manufacturer Identification Register is a read-only register at address00h (Most Significant Byte (MSB)) and 01h (Least Significant Byte (LSB)).Reading this register returns the Hewlett-Packard identification, FFFF16.

E1468A/E1469A Register Map

Register Name Type Address

Manufacturer ID Read Only base + 0016

Device Type Read Only base + 0216

Status/Control Read/Write base + 0416

Bank 0 Relay Control Register Read/Write base + 2016





Bank 5 Relay Control Register Read/Write base + 2A16

Bank 6 Relay Control Register Read/Write base + 2C16

Bank 7 Relay Control Register Read/Write base + 2E16

Channels 0990 - 0996 Relay Control Read/Write base + 3016


DeviceIdentification

Register

The Device Identification Register is a read-only register accessed ataddress 0216. Reading this register returns module identification of 256(010016) for an E1468A/E1469A module.

Status/ControlRegister

The Status/Control Register informs the user about the module’s status andconfiguration. Each relay requires about 12 msec execution time duringwhich time the modules are "busy". Bit 7 of this register is used to inform theuser of a "busy" condition. The interrupt generated after a channel has beenclosed can be disabled. Bit 6 of this register is used to inform the user of theinterrupt status.

In addition, if a terminal module is connected to the switch module, thepresent configuration of the terminal module’s status bit can be read. Bits10, 11, 12, and 13 of this register are used to determine the configuration ofthe terminal module. For example, if the Relay Matrix Switch module is notbusy (bit 7), the interrupt is enabled (bit 6), then a read of the Status/ControlRegister (base + 0416) returns DBBF.

Relay ControlRegisters

Reading these registers always returns FFFF16.

Writing to the RegistersYou can write to these Relay Matrix Switch module registers:

• Status/Control Register (base + 0416)• Bank 0 Relay Control Register (base + 2016)• Bank 1 Relay Control Register (base + 2216)• Bank 2 Relay Control Register (base + 2416)• Bank 3 Relay Control Register (base + 2616)• Bank 4 Relay Control Register (base + 2816)• Bank 5 Relay Control Register (base + 2A16)• Bank 6 Relay Control Register (base + 2C16)• Bank 7 Relay Control Register (base + 2E16)• Channels 0990 - 0996 Relay Control Register (base + 3016)

Status/ControlRegister

Writes to the Status/Control Register (base + 0416) enable you todisable/enable the interrupt generated when channels are closed. Writing a1 to bit 0 of the Status/Control Register (base + 0416) does not change thestate of the latching relays (individual channel relays). Writing a 1 to this bithas the same effect as removing power from the cardcage. Since the relaysare latching relays, they do not change state.

NOTE It is necessary to write a 0 to bit 0 after the reset has been performedbefore any other commands can be programmed and executed. SCPIcommands take care of this automatically.


To disable the interrupt generated when channels are closed, write a 1 tobit 6 of the Status/Control Register (base + 0416).

NOTE Typically, interrupts are only disabled to "peek-poke" a module. Refer tothe operating manual of the command module before disabling theinterrupt.

Relay ControlRegisters

Writes to the Relay Control Registers (base + 2016 to base + 3016) enableyou to switch desired channels. Figures 1-1 and 1-2 (see Chapter 1) showthe schematics for the modules and the bank, row, and column information.Any number of relays per bank can be closed at a time.

Manufacturer ID Register

base + 0016 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

Write Undefined

Read* Manufacturer ID

*Returns FFFF16 = Hewlett-Packard A16 only register based.

Device Type Register

base + 0216 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

Write Undefined

Read 010016

Status/Control Register

base + 0416 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

Write* Undefined D Undefined R

Read** Undefined S4 S3 S2 S1 Undefined B D Undefined

*R = Latching relays stay in their current state.*D = Disable interrupt by writing 1 in bit #6.

**B = Status "busy" is 0 in bit #7.**D = Status "Interrupt disable" is 1 in bit #6.**S4 -S1 = Status "Configuration Status bits" hardwired onto the terminal modules.

S4 S3 S2 S10 1 1 0 = E1469A 4x16 Matrix0 1 0 1 = E1468A 8x8 Matrix


Bank 0 Relay Control Register

base + 2016 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

Write* Undefined CH7 CH6 CH5 CH4 CH3 CH2 CH1 CH0

Read Always Returns FFFF16

*Writes a 1 to close channel.


base + 2216 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0





base + 2416 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0





base + 2616 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0





base + 2816 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0






base + 2C16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0





base + 2E16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0




Channels 0990 - 0996 Relay Control Register

base + 3016 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

Write* Undefined CH6 CH5 CH4 CH3 CH2 CH1 CH0




Appendix C

Relay Matrix Switch Error Messages

This table lists the error messages associated with the Relay Matrix Switchmodules when programmed with SCPI. See the appropriate commandmodule user’s manual for complete information on error messages.

Number Title Potential Cause(s)

-211 Trigger ignored Trigger received when scan not enabled. Trigger received after scancomplete. Trigger too fast.

-213 Init Ignored Attempting to execute an INIT command when a scan is already inprogress.

-224 Illegal parameter value Attempting to execute a command with a parameter not applicable to thecommand.

-350 Too many errors. The queue holds a maximum of 30 error numbers/messages for eachswitchbox. The queue has overflowed.

1500 External trigger sourcealready allocated

Assigning an external trigger source to a switchbox when the triggersource has already been assigned to another switchbox.

2000 Invalid card number Addressing a module (card) in a switchbox that is not part of theswitchbox.

2001 Invalid channel number Attempting to address a channel of a module in a switchbox that is notsupported by the module (e.g.,, channel 99 of a multiplexer module).

2006 Command not supportedon this card

Sending a command to a module (card) in a switchbox that isunsupported by the module.

2008 Scan list not initialized Executing a scan without the INIT command.

2009 Too many channels inchannel list

Attempting to address more channels than available in the switchbox.

2012 Invalid Channel Range Invalid channel(s) specified in SCAN <channel_list> command.Attempting to begin scanning when no valid channel list is defined.

2600 Function not supported onthis card

Sending a command to a module (card) in a switchbox that is notsupported by the module or switchbox.

2601 Channel list required Sending a command requiring a channel list without the channel list.

Relay Matrix Switch Error Messages 77Appendix C

Notes:

78 Relay Matrix Switch Error Messages Appendix C

Appendix D

Relay Life

Replacement StrategyElectromechanical relays are subject to normal wear-out. Relay life dependson several factors. The replacement strategy depends on the application. Ifsome relays are used more often or at a higher load than other relays, therelays can be individually replaced as needed.

If all relays see similar loads and switching frequencies, the entire circuitboard can be replaced when the end of relay life approaches. The sensitivityof the application should be weighed against the cost of replacing relays withsome useful life remaining.

NOTE Relays that wear out normally or fail due to misuse should not beconsidered defective and are not covered by the product's warranty.

Relay Life FactorsSome effects of loading and switching frequency on relay life follow.

• Relay Load. In general, higher power switching reduces relay life.In addition, capacitive/inductive loads and high inrush currents(for example, turning on a lamp or starting a motor) reduces relaylife. Exceeding specified maximum inputs can cause catastrophicfailure.

• Switching Frequency. Relay contacts heat up when switched. Asthe switching frequency increases, the contacts have less time todissipate heat. The resulting increase in contact temperature alsoreduces relay life.

End-of-Life DeterminationA preventive maintenance routine can prevent problems caused byunexpected relay failure. The end of life of a relay can be determined byusing one or more of three methods: contact resistance maximum value,contact resistance variance, and/or number of relay operations. The bestmethod (or combination of methods), as well as the failure criteria, dependson the application in which the relay is used.

Relay Life 79Appendix D

• Contact Resistance Maximum Value. As the relay begins to wearout, its contact resistance increases. When the resistanceexceeds a predetermined value, the relay should be replaced.

• Contact Resistance Variance. The stability of the contact resistancedecreases with age. Using this method, the contact resistance ismeasured several (5-10) times, and the variance of themeasurements is determined. An increase in the varianceindicates deteriorating performance.

• Number of Relay Operations. Relays can be replaced after apredetermined number of contact closures. However, this methodrequires knowledge of the applied load and life specifications forthe applied load.

80 Relay Life Appendix D

IndexE1468A/E1469A Relay Matrix Switch User’s Manual

AABORt subsystem, 40addressing registers, 69ARM subsystem, 41ARM:COUNt, 41ARM:COUNt?, 42

Bbase address, register, 70

Ccautions, 15checking module identification, 33command reference, 39common commands

*CLS, 65*ESE, 65*ESE?, 65*ESR?, 65*IDN?, 65*OPC, 65*OPC?, 65*RCL, 65*RST, 65*SAV, 65*SRE, 65*SRE?, 65*STB?, 65*TRG, 65*TST?, 65*WAI, 65format, 37quick reference, 65

configuring the switches, 15connector pinouts, 11

Ddeclaration of conformity, 9detecting error conditions, 35Device Identification register, 73documentation history, 8

Eerror messages, 77examples

Advancing Scan Using TRIGger, 62Closing Switch Channels, 51Enabling a Single Scan, 44Enabling Continuous Scanning, 44

E (continued)examples (cont’d)

Enabling ECL Trigger Bus Line 0, 46Enabling Operation Status Register Bit 8, 57Enabling Trig Out Port, 47Enabling TTL Trigger Bus Line 7, 48Identifying Relay Matrix Switch Modules, 33Illegal Channel Closure Error, 35Initial Operation, 29Opening Channels, 52Opening/Closing Rows/Columns, 34Querying Channel Closures, 51Querying Channel Open State, 53Querying Continuous Scanning State, 44Querying ECL Trigger Bus Enable State, 46Querying Number of Scans, 42Querying Operation Status Enable Register, 57Querying Trig Out Port Enable State, 47Querying Trigger Source, 64Querying TTL Trigger Bus Enable State, 49Querying the Error Queue, 61Reading Card #1 Model Number, 60Reading Card#1 Description, 59Reading Operation Status Register, 58Saving and Recalling States, 35Scanning Channels, 54Scanning Using Bus Triggers, 64Scanning Using External Triggers, 64Sequencing Channels (E1468A), 34Sequencing Channels (E1469A), 34Setting Card #1 Module to Power-On State, 60Setting Ten Scanning Cycles, 41Stopping a Scan with ABORt, 40Synchronizing a Relay Matrix Switch, 36Using Interrupts to Signal Errors, 35

Iinitial operation, 29INITiate subsystem, 43INITiate:CONTinuous, 43INITiate:CONTinuous?, 44INITiate[:IMMediate], 44installing switches, 18interrupt priority, setting, 17

Llinking commands, 39logical address switch, setting, 16

Index 81

MManufacturer ID register, 72matrixes, creating larger, 23

OOUTPut subsystem, 45OUTPut:ECLTrg[:STATe], 45OUTPut:ECLTrg[:STATe]?, 46OUTPut[:EXTernal][:STATe], 46OUTPut[:EXTernal][:STATe]?, 47OUTPut:TTLTrg[:STATe], 48OUTPut:TTLTrg[:STATe]?, 49

Ppower-on/reset conditions, 32programming

using SCPI, 28programming the switches, 28programming, addressing switches, 28programming, register-based, 69

Qquerying switches, 32

Rrecalling/saving states, 34register-based programming, 69registers

addressing, 69base address, 70Device Identification, 73Manufacturer ID, 72Relay Control, 74Status/Control, 73

relay life, 79relay matrix switches

addressing, 28checking module identification, 33commands, 31configuring, 15connector pinouts, 11description, 11detecting error conditions, 35E1468A description, 11E1469A description, 11error messages, 77initial operation, 29installing, 18power-on/reset conditions, 32programming, 28querying, 32specifications, 67switching channels, 33synchronizing, 36

relaysend-of-life determination, 79relay life factors, 79replacement strategy, 79

restricted rights statement, 7[ROUTe:] subsystem, 50[ROUTe:]CLOSe, 50[ROUTe:]CLOSe?, 51[ROUTe:]OPEN, 52[ROUTe:]OPEN?, 53[ROUTe:]SCAN, 53

Ssafety symbols, 8SCPI commands

command reference, 39format, 37linking commands, 39quick reference, 66using, 28

setting logical address switch, 16specifications, 67Status register switch, setting, 16Status/Control register, 73STATus subsystem, 55STATus:OPERation:CONDition?, 56STATus:OPERation:ENABle, 57STATus:OPERation:ENABle?, 57STATus:OPERation[:EVENt]?, 58STATus:PRESet, 58switch descriptions, 11switching channels, 33synchronizing switches, 36SYSTem subsystem, 59SYSTem:CDEScription?, 59SYSTem:CPON, 59SYSTem:CTYPe?, 60SYSTem:ERRor?, 60

Tterminal modules

attaching to relay switch module, 27configuring, 20wiring, 20

TRIGger subsystem, 62TRIGger[:IMMediate], 62TRIGger:SOURce, 63TRIGger:SOURce?, 64

Wwarnings, 8, 15warranty statement, 7

82 Index

*E1468-90005*Manual Part Number: E1468-90005
Printed in U.S.A. E1200

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